CN1118811A - Differencial shaped rod steel with high adhesion and high strength - Google Patents
Differencial shaped rod steel with high adhesion and high strength Download PDFInfo
- Publication number
- CN1118811A CN1118811A CN94115124A CN94115124A CN1118811A CN 1118811 A CN1118811 A CN 1118811A CN 94115124 A CN94115124 A CN 94115124A CN 94115124 A CN94115124 A CN 94115124A CN 1118811 A CN1118811 A CN 1118811A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- bar
- joint
- deformed bar
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/04—Dies; Selection of material therefor; Cleaning thereof with non-adjustable section
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Reinforcement Elements For Buildings (AREA)
- Metal Extraction Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides reinforcing steel bar using for concrete, especially the reinforcing steel bar used as prestressed concrete parts, which is used by rolling screw processing or cross wire sealing, a deformed steel bar having a high-adhesion of concreat of high-strength, wherein the deformed bar just hot-rolled and having spiral protrusion forming a knot in its outer surface for concrete reinforcement is reduced in cross section through a rounding operation, drawing at such reduction rate as to permit the knot to remain after the operation, and a plurality of flutes each of which is opposite in spiral direction to the knot are formed in the deformed bar. Then, the thus formed deformed bar is heat-treated through quenching and tempering operations.
Description
The present invention relates to a kind ofly highly adhere to, high strength special-shaped bar steel and manufacture method thereof, this bar steel is the reinforcing bar of using for the civil construction concrete, perhaps Main Reinforcing Steel and the auxiliary bar of using as the prestressed concrete product, in addition as the lower margin holdfast etc., through the processing of rolling spiral or through be used after the cross wire welding and have a profiled bar with concrete adhesion strength.
In the past, the deformed bar of using for concrete was to use hot rolling deformed bar as shown in figure 10.It is the joint 11 that forms overshooting shape by hot rolling on the surface of bar steel at regular intervals, with what increase with concrete sticking power.
But, the crude deformed bar of this hot rolled, because of the height of projection big, will make concrete sticking power big, still, the circularity after the hot rolling processing is just relatively poor, and, owing between top and bottom rolls, be provided with certain interval, produce two ribs 12 in rolling direction, thereby to carry out the spiral rolling be difficult to the end, opposite end under the state after rolling; In addition, when cross wire welds, have because of electrode loose contact and form the relatively poor shortcoming of welding property; And when web-handled being in line the shape wire rod, correct and send to continuously etc. the shortcoming that is difficult to handle with straightening roll processing with push rolls processing; The high strength special-shaped bar steel of the heat treated steel of using as the prestressed concrete product of especially the sort of process, because the hardness height of steel itself, when circularity is relatively poor, it is impossible carrying out spiral rolling processing under original state, must carry out spiral rolling processing under carrying out spiral after the machining.On the other hand, in order to address this problem, make under the occasion that circularity improves carrying out temper rolling processing, the handlebar joint destroys, and envoy's height reduces, and makes the problem that reduces with concrete sticking power thus.
Therefore, the purpose of this invention is to provide a kind ofly highly adhere to, high-intensity deformed bar and manufacture method thereof, it is to make an enterprising step of the hot rolling deformed bar through abnormity processing of its band joint carry out slight wire drawing processing a kind of with hot rolling, the circularity of the bar steel section that concrete uses is improved, secondary processing such as spiral rolling is carried out easily, high tack, high strength special-shaped bar steel and manufacture method thereof that the welding processing performance when using etc. has improved.In addition, purpose of the present invention also provides a kind of many new spiral helicine grooves that form on original bar steel, has strengthened that height with concrete sticking power adheres to, high strength special-shaped bar steel and manufacture method thereof.
To achieve the above object, the invention provides a kind ofly highly adhere to, high strength special-shaped bar steel, it is characterized in that it be make with hot rolling on external diameter, have the spirrillum projection, through the rolling processing of nodular, concrete with deformed bar or wire rod as blank, justify after the processing thermal treatment of quenching again, anneal with making the above-mentioned such section reduction rate of joint that is rolled into.
The present invention also provides a kind of and highly adheres to, high strength special-shaped bar steel, it is characterized in that it is to add man-hour carrying out above-mentioned circle, forms many zigzag shape grooves opposite with the rotary orientation of the joint of above-mentioned hot rolled spirrillum projection.
The present invention provides a kind of again and highly adheres to, high strength special-shaped bar steel, it is characterized in that it is to contain by weight, C:0.1～0.6%, S:0.15～2.0%, Mn:0.6～2.0%, Cr:0.6 diameter following, that rest part is made of iron and unavoidable impurities are bar steel or the wire rod of 5～50mm; And, make its tensile strength reach 930N/mm through Overheating Treatment
2More than, yield strength reaches 785N/mm
2Above.
The present invention also provides a kind of high adhering to, the manufacture method of high strength special-shaped bar steel, it is characterized in that it is being made by hot rolling, on external diameter, have the spirrillum projection through the rolling processing of nodular, concrete with deformed bar or special-shaped wire section as blank, so that the above-mentioned such section reduction rate of joint that is rolled into is carried out after drawing adds, on one side above-mentioned bar steel or wire rod are sent to continuously, on one side with high-frequency induction heating apparatus or after the device of directly switching on is heated to quenching temperature to whole section apace, its quenching is quenched, after this, again with high-frequency induction heating apparatus or after the device of directly switching on is heated rapidly to annealing temperature, make its quenching and anneal.
In addition, the present invention also provides a kind of and highly adheres to, the manufacture method of high strength special-shaped bar steel, it is characterized in that it is to add man-hour carrying out above-mentioned drawing, use has the circular drawing die of many spirrillum projections opposite with the rotary orientation of above-mentioned joint on internal diameter, make above-mentioned be rolled into joint such section reduction rate carry out drawing after, carry out above-mentioned thermal treatment.
In the present invention, that use is made by hot rolling, on external diameter, have the spirrillum projection, through the concrete of the rolling processing of nodular with deformed bar or wire rod, though circularity is relatively poor under the hot rolled state, but because existing joint on the blank, thereby can reduce follow-up operation, can obtain the deformed bar of high concrete sticking power easily.In addition, how much the height of the joint that above-mentioned hot rolling is formed stays remaining is to be determined by the internal diameter of the drawing die of the height of the datum diameter of deformed bar, joint, and in order to obtain high concrete sticking power, preferably process with the section reduction rate of the minimum that can reach circularity, the height of the joint that hot rolling is formed stays left as far as possible.By experimental result of the present invention as seen, preferably justify processing with the section reduction rate of height more than 40% of staying surplus original joint.
In addition, when on external diameter, newly processing many zigzag shape grooves, just can compensate the minimizing that the joint that is caused by circle processing highly reduces the concrete sticking power that brings.At this moment, if new zigzag shape groove is identical with the hand of spiral of the joint that above-mentioned hot rolling forms, because new zigzag shape groove is hidden in the bottom of above-mentioned joint, the effect that concrete sticking power is increased reduces, and the present invention is by forming the opposite zigzag shape groove of rotary orientation of many joints that form with above-mentioned hot rolling, just makes the joint that hot rolling forms and the zigzag shape groove of new formation that the effect that multiplies each other is played in the increase of concrete sticking power.And thermal treatment can also obtain desired physical strength by quenching, annealing.
To the qualification of the composition of deformed bar blank by following said reason decision.Promptly C being become surely is that 0.1～0.6% reason is owing to below 0.1%, just can not obtain desired intensity by quenching by weight, more than 0.6%, will make the toughness reduction.And Si reduces the loose effective constituent of high temperature, and the content of Si is become 0.15～2.00% surely, owing to, can not obtain making the effect of the loose reduction of high temperature below 0.15%, and toughness is reduced.The content of Mn is become 0.6～2.00% surely, owing to will improve hardenability,, after then can making quenching more than 2.00%, stay remaining austenite to increase 0.6% insufficient with next effect.Cr is used for increasing hardenability, the annealing resistance is increased, and the content of Cr is disadvantageous more than 0.6% economically, and the bar steel less to diameter, also can not obtain desired character even do not add Cr.
It is because this is as the size range of common concrete with high strength special-shaped bar steel that the size of bar steel of the present invention is defined as 5～50mm.In addition, heat-treat, make tensile strength reach 930N/mm
2More than, yield strength reaches 785N/mm
2More than, this is because such thermal treatment can reach the desired intensity of prestressed bar steel.
In manufacture method of the present invention, the circle method for processing no matter use which type of method can, but the drawing of wherein carrying out with drawing die processing is suitable for mass production most.Especially the processing of processing and forming many zigzag shape grooves being justified in the sort of drawing of carrying out with the circular drawing die that many spirrillum projections are arranged on the internal diameter simultaneously, is quite favourable to mass production.In addition, by with high-frequency induction heating apparatus or the thermal treatments such as device quenches continuously, annealing of directly switching on just can easily carry out the uniform mass production of character.
Fig. 1 is that the height of the embodiment of the invention adheres to, the outside drawing of high strength special-shaped bar steel;
Fig. 2 is the manufacturing procedure picture of the embodiment of the invention;
Fig. 3 is the sectional drawing of the hot rolling deformed bar blank of the embodiment of the invention;
Fig. 4 is sectional drawing projection, that do not have the deformed bar of the groove that drawing die pulls out that do not have of the expression embodiment of the invention;
Fig. 5 is the sectional drawing of deformed bar with the with groove of the drawing die drawing of band projection of the expression embodiment of the invention;
Fig. 6 is the sectional drawing of the sample that carries out concrete adhesion strength test usefulness of the embodiment of the invention;
Fig. 7 is the synoptic diagram of the testing apparatus that carries out concrete adhesion strength test usefulness of the expression embodiment of the invention;
Fig. 8 is the chart of the test-results of carrying out the test of concrete adhesion strength of the expression embodiment of the invention;
Fig. 9 is the stereographic map of the drawing die that the spirrillum projection is arranged on internal diameter of the expression embodiment of the invention;
Figure 10 is an outside drawing of representing to be used as in the present invention the hot rolling deformed bar of blank;
Figure 11 is that the height of the expression embodiment of the invention adheres to, the synoptic diagram of the head rolling machining shape of high strength special-shaped bar steel;
Figure 12 is continuous quenching and the annealed device synoptic diagram that uses in the expression embodiment of the invention.
Below, specifically describe embodiments of the invention.
Height of the present invention adheres to, high strength special-shaped bar steel (below it being abbreviated as high strength special-shaped bar steel) is to make with operation shown in Figure 2.That is,, select the hot rolling deformed bar of twist up as shown in figure 10 or wire rod (abbreviating the hot rolling deformed bar as down) and brushing in addition for use in the blank operation.Then in following one deoxygenated skin operation, make it pass through many roll straightenings machine etc., the oxide skin on surface is removed.Then, in drawing procedure, carry out cold-drawn with the circular drawing die of stipulating.Then in quenching process, with high-frequency induction heating apparatus or the device of directly switching on be heated to quenching temperature continuously, and carry out quenching with water-cooled and quench.After this, in annealing operation, equally with high-frequency induction heating apparatus or the device of directly switching on be heated to annealing temperature continuously, the quenching of annealing again.Then,, wire rod is rolled into coiled type, bar is held in the dimensioned cut-out in accordance with regulations of linearity ground, and carries out spiral processing etc. in manufacturing procedure; Then through inspection process, make finished product and export.
In the present embodiment, the nominal diameter of trade mark D10 be the hot rolling deformed bar of 9.53mm as blank, it is the bar steel of about one-tenth 30 degree right-hand(ed)screw shape projections joints of shape as shown in figure 10 that has that meets the JIS3112 regulation.Listed the chemical ingredients of this hot rolling deformed bar in the table 1.
Table 1
Chemical ingredients (weight %)
| Specification CH.No. UB32B M 34848 | Lot number 4721 | ?????C ????0.33 | ?????Si ????0.24 | ???Mn ??0.72 | ?????P ???0.010 |
| Specification CH.No. UB32B M 34848 | Lot number 4721 | ?????S ????0.007 | ?????Cr ????0.15 | ???Ti ??0.14 | ?????B ???0.0016 |
The section form of this bar steel of expression among Fig. 3.Promptly in Fig. 3, the column part diameter of bar steel is that the height of 8.85～8.90mm, strengthening rib is that the height of 0.36～0.38mm, joint is 0.58～0.63mm.
Be 9.10mm, be 9.20mm, on internal diameter, have six to become the circular drawing dies 22 of the spirrillum projection 22 at the left-handed angle of 18 degree to carry out cold-drawn processing with an internal diameter at the circular drawing die that does not have projection on the internal diameter and another internal diameter as shown in Figure 9.Fig. 4 represents to carry out with the drawing die that does not have projection the section of the bar steel after drawing is processed, and Fig. 5 represents to carry out with bossed drawing die the section of the bar steel after drawing is processed.From considering with concrete tack, wish to do 18 degree helix angles of above-mentioned spirrillum projection more greatly, but helix angle is if strengthen, drawing processing is difficulty just, therefore gets 18 and spends angles.
Fig. 4 has represented to carry out with the drawing die that does not have projection the section of the bar steel after the drawing, as shown in the figure, the column part diameter of bar steel is the same with blank, do not change, but it is flat that the summit of strengthening rib 12 and joint 11 becomes, the height of strengthening rib 12 is 0.24～0.28mm, and becoming is 63～78% of original height; The height of joint 11 is 0.25～0.30mm, and becoming is 40～52% of original height.Thus, improve circularity, improved spiral rolling performance or the like.Compare with the hot rolling deformed bar, because envoy's height reduces, thereby reduced some and concrete sticking power, its test-results is described in the back.
Fig. 5 has represented to carry out bar steel section after the cold-drawn processing with the circular drawing die that the spirrillum projection is arranged on the internal diameter.As shown in the figure, because with above-mentioned internal diameter is that the drawing die that does not have projection of 9.10mm is corresponding, the internal diameter that has the drawing die of projection is 9.20mm, thereby the size of strengthening rib 12 and joint 11 does not all have drawing die drawing big of projection than above-mentioned usefulness, and and for example shown in the figure, the width that form left-handed 18 degree angles on external diameter are that 1.3mm, the degree of depth are the grooves 13 of the hexagonal zigzag shape of 0.4mm.Fig. 1 has represented the outward appearance of this bar steel.That is, the drawing deformed bar 2 of with groove as shown in Figure 1 forms the left-handed 18 opposite zigzag shape grooves of spending of rotation direction of spending the joint of right-hand(ed)screws with 30 of above-mentioned hot rolling deformed bar on its external diameter.Compensate the joint height that makes the hot rolling deformed bar that causes by drawing by this zigzag shape groove and reduce reducing of being caused with concrete sticking power.
Deformed bar after the above-mentioned drawing processing be to carry out with concrete adhesion strength test according to the method (draft) of association " Japanese concrete works ".Sample as shown in Figure 6.Among the figure, sample 4 is the center that is configured in 10cm cubical concrete cube 5 as the deformed bar 7 of test materials, disposing one around it is the spiral tube that the reinforcing bar 6 of 6mm is wound into by diameter, this spiral tube diameter is that the 8cm pitch is 4cm (0.5 circle is saved in the end, carries out the transition to level with 1.5 circles).In addition, also handlebar concrete cube (bar steel flatly is provided with) of laterally reinforcing, concrete character is as described below.
Material time limit of service 28 days
Maintenance in 14～24 ℃ of water of concrete maintenance condition
0 ℃ of concrete strength, 300 ± 30kgf/cm
2
Slump 8 ± 2cm
Test is with 30 tons of tensile testing machines, carries out with method shown in Figure 7.Among the figure, sample 4 is placed on the top of bearing platform 41 of the fixed part of tensile testing machine, is added on the deformed bar 7 of test by the method for 44 drawing forces along arrow P by spheric seating 42, packing ring 43.And with the slippage of the deformed bar 7 of dial ga(u)ge 45 determination tests, by amplifier 4b, by the relation between xy registering instrument 47 record slippages and the drawing force.
The result of Fig. 8 and this test of table 2 expression.Among Fig. 8, the longitudinal axis is represented drawing force (KN), and transverse axis is represented slippage (mm).Curve A, curve B, curve C and curve D represent respectively through the hot rolled deformed bar, the not drawing force of the Wu Erbo of the 9.2mm drawing deformed bar drawing deformed bar, with groove and as a comparison of with groove (drawable material, the Wu Erbo of band φ 10 grooves are registered trademarks of high frequency forge hot company) and the relation curve of slippage.Table 2 is from result shown in Figure 8, and taking out slippage is 0.05mm; 0.1mm; 0.25mm; And their mean value and maximum adhesion power tabular in addition.These results analysis of being made a summary, can obtain following conclusion, promptly, because the hot rolling deformed bar is drawn into not with groove, envoy's height reduces, thereby maximum adhesion just is reduced to 26.5KN from 36.8KN, but liken to into the sticking power of the Wu Erbo of comparative example big.The maximum adhesion power of deformed bar relative therewith, that be drawn into groove is 34.7KN, can obtain almost the sticking power with hot rolling deformed bar same degree.Therefore can think that having compensation by the formed new spiral grooves of the drawing of with groove makes high minimizing of joint of hot rolling deformed bar cause the effect that reduces with concrete sticking power by drawing.
Table 2
Concrete adhesion strength test-results
| Kind | Slippage (mm) | Maximum adhesion power | ||||
| ?0.05 | ??0.10 | ?0.25 | On average | Slippage (mm) | Maximum adhesion power (KN) | |
| (1) D10 original pressure rolling | ?14.7 | ??19.2 | ?27.5 | ???20.5 | ????1.54 | ???36.8 |
| (2) D10 is not with the drawing bar steel of φ 9.1 grooves | ?16.2 | ??17.4 | ?19.5 | ???17.7 | ????1.82 | ???26.5 |
| (3) the drawing bar steel of D10 band φ 9.2 grooves | ?19.2 | ??21.8 | ?27.4 | ???22.8 | ????0.95 | ???34.7 |
Table 2 (continuing)
Concrete adhesion strength test-results
| Kind | Slippage (mm) | Maximum adhesion power | ||||
| ?0.05 | ??0.10 | ???0.25 | On average | Slippage (mm) | Maximum adhesion power (KN) | |
| (4) black ear ripple 9.2mm *(the drawing bar steels of band φ 10 grooves) | ?12.7 | ??12.4 | ???9.6 | ???11.6 | ???0.02 | ???12.8 |
*Comparative material: Wu Erbo is the registered trademark of high frequency forge hot company
Then, heat-treat with 30 pairs of above-mentioned deformed bars of continuous quenching annealed device shown in Figure 12 through drawing.In Figure 12, the blank W of the deformed bar of above-mentioned process drawing is by pinch roll 31, a vertical section straightening roll 32, crosspiece straightening roll 33, pinch roll 34, sent to continuously, high-frequency induction heating coil 35 with quenching usefulness is heated to 920 ℃ of quenching temperatures, use water-cooling jacket 36 quenchings then, bar steel is quenched.Then, be heated to after 370～380 ℃ the annealing temperature,, send by pinch roll 39 then by water-cooling jacket 38 quenchings with the high-frequency induction heating coil 37 of annealing usefulness.
Table 3 has been listed the mechanical properties of the deformed bar after the thermal treatment.Can improve physical strength by thermal treatment, it is as shown in the table, do not have in the deformed bar of the deformed bar of groove and with groove any one can both satisfy yield load, tension load, extension at break, the relative reduction in area of JISG 3109 specifications.
Table 3
Mechanical properties after the thermal treatment (N=5 mean value)
| Kind | Heat-treat condition | External diameter mm | Real | |
| Quench | Annealing | |||
| Specification value JISG 3109 | ||||
| D10 hot pressing blank | ????10.05 | ????71.3 | ||
| D10 → 9.10 φ do not have the drawing bar steel of groove | ?920℃ | ?380℃ | ?????9.12 | ????63.7 |
Table 3 (continuing)
Mechanical properties after the thermal treatment (N=5 mean value)
| Kind | Heat-treat condition | External diameter mm | Real | |||
| Quench | Annealing | |||||
| The drawing bar steel of D10 → 9.2 φ with grooves | ?920℃ | ?370℃ | ???9.22 | ????62.5 | ||
| Mechanical properties (N=5 mean value) after table 3 (continuing) thermal treatment | ||||||
| Kind | Yield load KN | Tension load KN | Extension at break 80% | |||
| Specification value JISG 3109 | 81.6 above (1,275N/mm 2More than) | 90.9 above (1,420N/mm 2More than) | More than 5 | |||
Table 3 (continuing)
Mechanical properties after the thermal treatment (N=5 mean value)
| Kind | Yield load KN | Tension load KN | Extension at break 80% |
| D10 hot pressing blank | ????21.9 ??(307N/mm 2) | ??????41.9 ????(588N/mm 2) | ???25.1 |
| D10 → 9.10 φ do not have the drawing bar steel of groove | ????85.7 ??(374N/mm 2) | ??????93.7 ????(1471N/mm 2) | ????8.7 |
| The drawing bar steel of D10 → 9.2 φ with grooves | ????87.9 ??(1406N/mm 2) | ???????93.2 ????(1491N/mm 2) | ????7.6 |
It in () actual stress
The RL23 type rolling mill made from high frequency forge hot corporate system carries out spiral rolling test to this deformed bar finished product.The results are shown in table 4 li.Can obtain such result, that is, not have in the deformed bar of the deformed bar of groove and with groove any one can both satisfy the specification value of JISB 0221.With hot rolling profile bar steel billet material, because circularity is bad, can not carry out the spiral rolling, and with the finished product of present embodiment, then can carry out the spiral rolling and do not have what problem.
Table 4
The rolling test-results of screw thread (the rolling mill RL23 of high frequency forge hot (limited-liability company) system)
| Mother metal external diameter mm | Spiral size (M10 P=1.25) | Head stretch test result N=5 (mean value) (spire intensity/strength of parent) | ||
| The spiral external diameter | Effective diameter | |||
| JISB 0211 metric system detailed catalogue | ????9.81 ????～9.96 | ???8.998 ???～9.148 | ||
| D10 → 9.10 φ do not have the drawing bar steel of groove | ???9.12 | ????9.86 | ???9.04 | ????86.7KN/93.7KN ???????????????92.5％ |
| The drawing bar steel of D10 → 9.20 φ with grooves | ???9.22 | ????9.84 | ???9.00 | ????85.9KN/93.7KN ???????????????92.2％ |
Table 4 (continuing)
The rolling test-results of screw thread (the rolling mill RL23 of high frequency forge hot (limited-liability company) system)
| Mother metal external diameter mm | Spiral size (M10 P=1.25) | Head stretch test result N=5 (mean value) (spire intensity/strength of parent) | |
| The spiral external diameter | Effective diameter | ||
| Wu Erbo *9.2 φ 9.14 comparative materials | ???9.83 | ???9.04 | ???85.9KN/93.8KN ???91.6％ |
*Wu Erbo is the registered trademark of high frequency forge hot (limited-liability company)
Then, the FP11 type rolling mill made from high frequency forge hot corporate system is rolled into shape shown in 11 to the head of this deformed bar, carries out tension test then.Test the results are shown in table 5 li.Any one bar steel of table 5 expression all has the tensile strength of regulation, and normal fracture all takes place at the mother metal place.Therefore shown that the head forming process also can carry out under common condition.
Table 5
Head rolling test-results (the rolling mill FP11 that high frequency forge hot corporate system is made)
| Mother metal outside diameter d mm | Head dimensions (mm) | Head stretch test result N=5 (using circular pressing plate) | ||
| Outer diameter D | Thickness H | |||
| D10 → 9.10 φ do not have the drawing bar steel of groove | ???9.12 | ???16.5 | ???7.5 | (1) 93.7KN is all at female (2) 93.8KN material place fracture (3) 93.6KN (4) 93.5KN (5) 93.7KN |
| The drawing bar steel of D10 → 9.20 φ with grooves | ???9.22 | ???16.8 | ???7.4 | (1) 93.0KN is all at female (2) 93.0KN material place fracture (3) 93.2KN (4) 93.4KN (5) 93.4KN |
| Wu Erbo *9.2 φ comparative material | ???9.14 | ???16.7 | ???7.5 | (1) 93.8KN is all at female (2) 94.0KN material place fracture (3) 93.9KN (4) 94.2KN (5) 94.1KN |
*Wu Erbo is the registered trademark of high frequency forge hot company
Be that deformed bar with the specification D10 of JISG 3112 illustrates in present embodiment, certainly also can be with D6～51 of this specification.
As mentioned above, because the present invention destroys the joint and the strengthening rib of the hot rolling deformed bar of circularity difference by drawing processing, thereby circularity is improved, thereby it is poor because of circularity to have improved original hot-finished material, do not carry out the shortcoming that machining just can not be carried out rolling processing under the spiral, the rolling handling ease is carried out; And, because when carrying out the welding of cross wire, the contact of electrode is better, thereby welding is carried out easily, like this, has improved handling property at the scene, has improved working efficiency.In addition, also improved, it can easily be handled during from the wire rod of web-handled Cheng Zhi, carrying out corrigent difficulty with straightening roll with original hot-finished material.
Preferably the height of the spirrillum projection of the joint of original hot-finished material is stayed more than 40%, can also obtain the better sticking power of more widely used Wu Er wave material like this than in the past, by on external diameter, forming many zigzag shape grooves opposite, can further improve its concrete sticking power with the rotary orientation of above-mentioned joint.
If the composition of blank is defined as contain C:0.1～0.6%, Si:0.15～2.0%, Mn:0.6～2.0% by weight, below the Cr:0.6%, rest part is made of iron and unavoidable impurities, just obtains the intensity of specification value easily; Owing to improved anti-relax, thereby improved the usage safety performance of high strength special-shaped bar steel.
Owing to can at random set the residual content of the height of the joint on the hot-finished material with manufacture method of the present invention in the man-hour that adds of justifying, thereby can obtain the good high strength special-shaped bar steel of concrete tack.In addition, owing to use the circular drawing die that on internal diameter, has many spirrillum projections opposite to carry out drawing with the rotary orientation of the joint of original hot-finished material, thereby can form many zigzag shape grooves with any width, degree of depth opposite with the rotary orientation of former epimerite, also just can obtain the better high strength special-shaped bar steel of concrete tack.And, by with high-frequency induction heating apparatus or the device of directly switching on heat-treat continuously, just quite economically anti-lax value of mass production and intensity all quite high, the uniform high strength special-shaped bar steel of character.
Claims (5)
1, a kind ofly highly adhere to, high-intensity deformed bar, it is characterized in that it is that deformed bar that the concrete of the rolling processing of the band joint made from hot rolling that has the spirrillum projection on external diameter is used or wire rod are as blank, justify after the processing with the above-mentioned section reduction rate that is rolled into joint, through quenching, annealing thermal treatment.
2, as the described height of above-mentioned claim 1 adhere to, high-intensity deformed bar, it is characterized in that it is to add man-hour carrying out above-mentioned circle, form many zigzag shape grooves opposite with the rotary orientation of the joint of above-mentioned hot rolled spirrillum projection.
3, as above-mentioned claim 1 or 2 described height adhere to, high-intensity deformed bar, it is characterized in that it is to contain by weight, C:0.1～0.6%, Si:0.15～2.00%, Mn:0.6～2.0%, Cr:0.6% diameter following, that rest part is made of iron and unavoidable impurities are bar steel or the wire rod of 5～50mm; And, make its tensile strength reach 930N/mm through Overheating Treatment
2More than, yield strength is 785N/mm
2More than.
4, a kind of manufacturing is adhered to as claim 1 or the described height of claim 3, the method of high strength special-shaped bar steel, it is characterized in that it is making with hot rolling, on external diameter, have the spirrillum projection through nodular rolling processing, deformed bar that concrete is used or wire rod are as blank, carry out after the drawing with the above-mentioned section reduction rate that is rolled into joint, on one side above-mentioned bar steel or wire rod are sent to continuously, on one side with high-frequency induction heating apparatus or after the device of directly switching on is heated rapidly to quenching temperature to whole section, its quenching ground is quenched, after this, with high-frequency induction heating apparatus or after the device of directly switching on is heated rapidly to annealing temperature, annealed in its quenching ground again.
5, a kind of make as claim 2 or 3 described height adhere to, the method for high strength special-shaped bar steel, it is characterized in that it is to add man-hour carrying out above-mentioned drawing, use has the circular drawing die of many spirrillum projections opposite with the rotary orientation of above-mentioned joint on internal diameter, carry out carrying out above-mentioned thermal treatment after the drawing with the above-mentioned section reduction rate that is rolled into joint.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11340394A JP2704834B2 (en) | 1994-05-02 | 1994-05-02 | High-adhesion, high-strength deformed steel bar and method for producing the same |
| JP11340494A JP2733739B2 (en) | 1994-05-02 | 1994-05-02 | High adhesion and high strength deformed steel bars |
| JP113404/94 | 1994-05-02 | ||
| JP113403/94 | 1994-05-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1118811A true CN1118811A (en) | 1996-03-20 |
| CN1042748C CN1042748C (en) | 1999-03-31 |
Family
ID=26452391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94115124A Expired - Fee Related CN1042748C (en) | 1994-05-02 | 1994-09-06 | Differencial shaped rod steel with high adhesion and high strength |
Country Status (5)
| Country | Link |
|---|---|
| KR (1) | KR0144832B1 (en) |
| CN (1) | CN1042748C (en) |
| GB (1) | GB2289231B (en) |
| MY (1) | MY116622A (en) |
| TW (1) | TW281710B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934653A (en) * | 2014-04-16 | 2014-07-23 | 江苏盛大金属制品有限公司 | Method for processing high-strength high-ductility reinforcing steel bars special for high speed railway |
| CN104946987A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | High-strength finish rolled steel bar and production method thereof |
| CN106623480A (en) * | 2017-01-19 | 2017-05-10 | 辽宁通达建材实业有限公司 | Production method of prestressed wire with small transmission length |
| CN109762980A (en) * | 2019-04-01 | 2019-05-17 | 北京泰杰伟业科技有限公司 | A kind of heat treatment die of aneurysm treatment spring ring |
| CN110257705A (en) * | 2019-07-02 | 2019-09-20 | 常熟市龙腾特种钢有限公司 | A kind of prestressed concrete steel stick steel being not easy brittle failure and its production method |
| CN115135560A (en) * | 2020-02-20 | 2022-09-30 | 蒂森克虏伯普利斯坦股份公司 | Adjusting drive for a steering column and steering column for a motor vehicle |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1219366A3 (en) * | 2000-12-27 | 2003-11-19 | Christian Hoffmann | Method for manufacturing a profile, especially a thread, on steel rods and installation and device therefor |
| JP4278149B2 (en) * | 2003-03-18 | 2009-06-10 | Ｊｆｅスチール株式会社 | Shaped steel and wall body using the shaped steel |
| DE10315418B3 (en) * | 2003-04-04 | 2004-07-22 | Thyssenkrupp Automotive Ag | Thermomechanical treatment of round steel bars heated above the recrystallization temperature useful in the thermomechanical and heat treatment of steel |
| DE102008036237B3 (en) * | 2008-08-02 | 2010-01-28 | GMT Gesellschaft für metallurgische Technologie- und Softwareentwicklung mbH | Method and plant for inline forming, tempering and straightening rod-shaped metal parts |
| CN103406374B (en) * | 2013-07-29 | 2015-04-29 | 湖北龙泰高新建材有限公司 | Wire leading device and wire leading method for prestressing force spiral rib steel wire |
| TWI647364B (en) * | 2016-10-14 | 2019-01-11 | 郭昱良 | Special-shaped steel bars, steel trusses, and floor slab hanging formwork method system units using the same |
| KR102313889B1 (en) * | 2021-03-11 | 2021-10-18 | 한국철강 주식회사 | Deformed reinforcing bar manufacturing method by rolling |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA725390A (en) * | 1960-06-21 | 1966-01-11 | Gillberg Johannes | Method and apparatus for the manufacture of reinforcing bars |
| NL168000C (en) * | 1971-04-14 | 1982-02-16 | Koninklijke Hoogovens En Staal | METHOD FOR PRODUCING LOW CARBON STEEL PROFILE PROFILE, AND WELDED PRODUCTS, SUCH AS CONCRETE MATS, MANUFACTURED FROM PROFILED BARS OBTAINED |
| BE874535A (en) * | 1979-02-28 | 1979-06-18 | Centre Rech Metallurgique | PROCESS FOR MANUFACTURING HIGH ELASTIC LIMIT STEEL LAMINATED PRODUCTS |
| DE3344775C1 (en) * | 1983-12-10 | 1984-10-11 | Berchem & Schaberg Gmbh, 4650 Gelsenkirchen | Tendons for building structures |
-
1994
- 1994-07-11 TW TW083106275A patent/TW281710B/zh active
- 1994-07-22 KR KR1019940017790A patent/KR0144832B1/en not_active IP Right Cessation
- 1994-07-26 GB GB9415023A patent/GB2289231B/en not_active Expired - Fee Related
- 1994-08-22 MY MYPI94002185A patent/MY116622A/en unknown
- 1994-09-06 CN CN94115124A patent/CN1042748C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934653A (en) * | 2014-04-16 | 2014-07-23 | 江苏盛大金属制品有限公司 | Method for processing high-strength high-ductility reinforcing steel bars special for high speed railway |
| CN104946987A (en) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | High-strength finish rolled steel bar and production method thereof |
| CN106623480A (en) * | 2017-01-19 | 2017-05-10 | 辽宁通达建材实业有限公司 | Production method of prestressed wire with small transmission length |
| CN109762980A (en) * | 2019-04-01 | 2019-05-17 | 北京泰杰伟业科技有限公司 | A kind of heat treatment die of aneurysm treatment spring ring |
| CN109762980B (en) * | 2019-04-01 | 2024-03-01 | 北京泰杰伟业科技股份有限公司 | Heat treatment die of spring ring for aneurysm treatment |
| CN110257705A (en) * | 2019-07-02 | 2019-09-20 | 常熟市龙腾特种钢有限公司 | A kind of prestressed concrete steel stick steel being not easy brittle failure and its production method |
| CN110257705B (en) * | 2019-07-02 | 2021-07-02 | 常熟市龙腾特种钢有限公司 | Steel for prestressed concrete steel bar not easy to brittle fracture and production method thereof |
| CN115135560A (en) * | 2020-02-20 | 2022-09-30 | 蒂森克虏伯普利斯坦股份公司 | Adjusting drive for a steering column and steering column for a motor vehicle |
| CN115135560B (en) * | 2020-02-20 | 2024-04-16 | 蒂森克虏伯普利斯坦股份公司 | Adjustment drive for a steering column and steering column for a motor vehicle |
| US12091076B2 (en) | 2020-02-20 | 2024-09-17 | Thyssenkrupp Presta Ag | Adjustment drive for a steering column, and steering column for a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042748C (en) | 1999-03-31 |
| MY116622A (en) | 2004-03-31 |
| GB2289231B (en) | 1997-04-16 |
| KR950032655A (en) | 1995-12-22 |
| KR0144832B1 (en) | 1998-08-17 |
| GB2289231A (en) | 1995-11-15 |
| TW281710B (en) | 1996-07-21 |
| GB9415023D0 (en) | 1994-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1042748C (en) | Differencial shaped rod steel with high adhesion and high strength | |
| CN1195708A (en) | Steel for manufacturing steel parts formed by cold plastic deformation and method thereof | |
| CN112239830A (en) | Low-cost high-ductility disc strip for CRB600H and rolling process thereof | |
| US3908431A (en) | Steels and method for production of same | |
| EP0674720B1 (en) | Cold formed high strength steel parts | |
| EP0554257B1 (en) | High-strength steel parts and method of making | |
| WO2002092250A1 (en) | Heat-treated deformed steel wire, and method and apparatus for manufacturing the same | |
| EP0303041B1 (en) | Oil-quenched and tempered hard drawn steel wire with a shaped section, and process for producing the same | |
| CN105555976A (en) | Process for manufacturing high-carbon electric resistance welded steel pipe, and automobile part | |
| CN100396802C (en) | Repairing method for mechanical machine-lathed compression spring | |
| CN100342038C (en) | Cold-worked steels with packet-lath martensite/austenite microstructure | |
| CN1111101C (en) | Non skin-pass tech. for medium carbon, micro-alloy, seamless steel tube | |
| JP4182556B2 (en) | Seamless steel pipe manufacturing method | |
| JPH07300945A (en) | Deformed bar steel with high adhesion and high strength, and manufacture thereof | |
| JP2003105495A (en) | Wire-shaped or bar-shaped steel excellent in deformability and machine part | |
| JP3913088B2 (en) | Manufacturing method for medium and high carbon steel sheets with excellent deep drawability | |
| JP2565687B2 (en) | Manufacturing method of high strength large diameter deformed steel bar | |
| CA2128019C (en) | High-strength steel parts and method of making | |
| JP3033842B2 (en) | Manufacturing method of wire for cold working and equipment for manufacturing wire for cold working | |
| JPH02274810A (en) | Manufacturing method for high tensile strength non-tempered bolts | |
| JPH0530884B2 (en) | ||
| CN115446130A (en) | Production method of high-carbon steel rail containing RE element | |
| CN116673431A (en) | A production method from bar to fastener | |
| JPH0233771B2 (en) | ||
| RU2049588C1 (en) | Railway wheel manufacture method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19990331 Termination date: 20100906 |