CN102840205A - Bobtail high strength rivet connection pair and manufacturing method thereof - Google Patents
Bobtail high strength rivet connection pair and manufacturing method thereof Download PDFInfo
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- CN102840205A CN102840205A CN2012102089364A CN201210208936A CN102840205A CN 102840205 A CN102840205 A CN 102840205A CN 2012102089364 A CN2012102089364 A CN 2012102089364A CN 201210208936 A CN201210208936 A CN 201210208936A CN 102840205 A CN102840205 A CN 102840205A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 48
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Abstract
The invention discloses a bobtail high strength rivet connection pair and a manufacturing method thereof. The manufacturing method comprises the following steps of: processing a cylindrical metal material, and forming a rivet provided with a nail head and a rod body; subsequently carrying out quenching and tempering heat treatment on the rivet, carrying out fine turning or grinding treatment on the rod body, and enabling the rod body to be subjected to hole shrinkage to be an effective diameter used for manufacturing a locking groove and a broached groove; then, carrying out cold roll treatment on the rod body of the effective diameter, and preparing the locking groove and the broached groove with discontinuous annular grooves; arranging a rupture groove between the locking groove and the broached groove to manufacture a rivet; and processing the cylindrical metal material to form a rivet sleeve provided with a sleeve head and a sleeve body, then carrying out heat treatment, and manufacturing the rivet sleeve. The rivet and the rivet sleeve prepared by the manufacturing method provided by the invention have excellent integrated mechanical properties and meet the requirements of international standard ISO(international standardization organization) 898.18.8 level, the construction work performance(clamping force, pulling-out force and shearing force) of a rivet connecting pair meets the requirements of United States (US)standard US, MIL,P-23469; and in addition, the process is simple, the cost is lower, and the bobtail high strength rivet connection pair is convenient for users.
Description
Technical field
The present invention relates to a kind of machinery, railway production method, relate in particular to a kind of production method of non-removable short-tail high-strength rivet connection pair with the fastening piece goods.
Background technique
For a long time, steel structure such as railway, lorry, bridge are the conventional rivets of widely-used rivet hot all, and its join strength is low, and later maintenance cost is high, is replaced by the bolt auxiliary connection gradually.Bolt auxiliary connection intensity is high, clamping force, and pulling-out force is controlled; Application area enlarges day by day, but it adopts and be threaded, and self-locking property is poor; Particularly during the World War II forties of 20th century, the fastening high-strength bolt of aircraft-carrier-deck produces loosening when aircraft landing; Become hidden danger, noticeable.Though the high-strength bolt auxiliary connection is easy to dismounting, it is easy to become flexible under judder is impacted, and makes it lose the fundamental function that connects.
U.S.'s Haake (Huck) company develops with annular groove and connects the Haake rivet that replacement is threaded, and has solved never becoming loose problem under the vibrations operating conditions.The Haake rivet has another name called ring-grooved rivet, and the high tenacity rivet is made up of rivet and two parts of riveting cover, and rivet is made up of nail bar and ailhead.During riveted joint, earlier rivet is inserted in the nail hole of connected piece, from the connected piece another side riveting cover is enclosed within on the rivet locking slot again; Muzzle with riveting gun is enclosed within on the kerve of rivet then; And muzzle propped up riveting cover end face, and press button on the riveting gun again, riveting gun is about to the kerve tension of rivet.Simultaneously, extrusion die is pushed ahead, and the metallic material of nail cover inwall is pushed in the locking slot of engaging-in rivet, makes the two riveted become a single piece, never becoming loose, and it has easy to operate, and efficient is high, noiseless, characteristics such as anti-seismic performance is good.
The sixties in 20th century, the usefulness of switching from manufacturing military products to goods for civilian use, the Haake rivet expands steel structure to and mechanical industry is used; Its technical specifications, except that pattern, size, the mechanical property of rivet is by USS United States Standard ASTMA325 (being international standard ISO898188 level); Rivet, riveting are overlapped the construction work performance (clamping force, pulling-out force and shearing force) of auxiliary connection and with the machine testing requirement, are pressed USS United States Standard US; MIL, the regulation of P-23469.Because the control of patent and complete set technology, after this in decades, always by U.S. Haake company simple monopoly international market, uncontested adversary is globally unique locking high tenacity rivet supplier.
After 1998, China begins to introduce U.S.'s Haake rivet (high tenacity rivet) and is used for railway freight-car, substitutes high-strength bolt, prevents to be prone to loosening big problem because of train speed-raising operation at vibrations aggravation bolt.But; The Haake rivet of import is not according to the international standard and the USS United States Standard supply of material; But, part machinery performance and construction work performance (clamping force, pulling-out force, shearing force) data are not provided according to " aiming at the Huck fastening piece standard that the Chinese market provides " supply of material.In addition, the main agent of Haake rivet regulation: the Haake rivet of Chinese import must not be used for military industry field, and this can not satisfy the needs of China's economic construction and national defense construction (the particularly fastening locking high tenacity rivet of aircraft-carrier-deck) far away.
At present, domestic the high tenacity rivet also being researched and developed, is the high-strength rivet connection pair that the Chinese invention patent of CN 1807907A discloses the locking usefulness of a kind of heavy parts like publication number, is made up of rivet and riveting cover.Wherein, rivet is made up of ailhead and shaft, and shaft is made up of mobile jib and nail tail, and the centre is separated by breaking groove, and uniform annular groove is arranged on it.The riveting cover is hollow solid of rotation, and its endoporus, cover height match with rivet.Special-purpose riveting machine (pumping plant, riveting gun) overlaps riveting in the engaging-in by force rivet locking of the endoporus metallic material annular groove, makes both parts that is combined as a whole, never becoming loose.This rivet connection pair processing is simple, but its nail tail is longer, causes the steel waste.In addition; This rivet connection pair latch-up-free device; Can not guarantee positioning balance, stable construction under installation conditions, influence installation quality, this rivet does not have the part machinery performance requirement; Do not have the requirement of construction work performance (clamping force, pulling-out force and shearing force) yet, can't be applied on the Important Project.
Notice of authorization number discloses a kind of high-strength rivet connection pair and manufacturing process for the Chinese invention patent of CN 101315092B; Adopting stainless steel 0Cr17Ni2 is the feedstock production rivet; With stainless steel 0Cr18Ni9 is material preparation riveting cover; The employing surface lubrication is handled, and new procesies such as breaking groove fine finishing and finished surface plating Ni make riveting intensity reach 8 grades.The rivet of this invention and riveting cover all adopt stainless steel as raw material, cost an arm and a leg, and cost is high.In addition, the high-strength rivet connection pair of preparation nail tail is longer, the waste steel, and rivet connection pair is the latch-up-free device in installation process, can not guarantee that balance, the construction under installation conditions is unstable.
Summary of the invention
Primary and foremost purpose of the present invention is the problem that exists to above-mentioned existing technology; Provide that kind of feed is convenient, technology is simple; Cheap, and it is moving to prevent under installation conditions, to produce axial heavy curtain, guarantees the steadily manufacturing process of the short-tail high-strength rivet connection pair of construction of riveted joint.
In order to achieve the above object, the present invention provides a kind of production method of short-tail high-strength rivet connection pair, comprises the steps:
1) preparation rivet comprises:
1.1) handle through cylindric metallic material being carried out warm rammer, cold-heading or cold hobbing, form rivet with ailhead and shaft;
1.2) rivet is quenched and tempering heat treatment successively;
1.3) through shaft, carry out finish turning or ground, the footpath that makes its undergauge become to be used for making locking slot and kerve to quenching with the rivet of tempering heat treatment;
1.4) footpath shaft in said is carried out the cold rolling processing, process locking slot and kerve above that with discontinuous annular recess;
1.5) between locking slot and kerve, leave breaking groove;
2) preparation riveting cover comprises:
2.1) handle through cylindric metallic material being carried out warm rammer, cold-heading or cold hobbing, form standard riveting cover or flange riveting cover;
2.2) the riveting cover is carried out heat treatment.
Production method of the present invention also is included in said step 1.5) step of on the locking slot excircle, leaving of locating slot that is used for locating body carried out afterwards; And in said step 2.1) extrusion on the body bore area of execution afterwards and the step of the flange that locating slot is complementary, be included in the flange that riveting cover bore area and rivet groove milling are complementary.
With riveting cover and rivet locking, relative rivet was fixed when making riveting be enclosed within installation when locating slot was used for the riveted joint installation, and it is moving under installation conditions, can not produce axial heavy curtain.When riveted joint was installed, the riveting cover was enclosed within on the rivet locking slot, and flange advances along locating slot and compresses, and the riveting cover is turned an angle again, and flange breaks away from locating slot, engages with the rivet annular groove, i.e. the lockable mounting point.Locating slot can be located on the excircle arbitrary position of locking slot; The flange that is complementary with locating slot is located at the internal surface that riveting is overlapped accordingly; The position of locating slot and flange setting make flange along locating slot advance compress and turn an angle after; The riveting cover just in time is positioned on the rivet locking slot, just in time meshes with the locking slot extruding so that riveting is enclosed within when riveting.Among the present invention, locating slot is arranged on the excircle of locking slot end, and flange is arranged on the internal surface of riveting cover end accordingly.
Locking slot of the present invention is used for riveting cover and rivet locking are locked in rivet bar after one's death at the riveting cover, riveting gun extruding riveting cover; In the engaging-in rivet shaft of the metallic material that riveting the is put locking slot; Riveting cover and locking slot are extruded-riveted, and rivet and riveting cover become a single piece, never becoming loose.Kerve is used in the process of breaking kerve being clamped and fixing.Kerve designs for short-tail, and length is 20-40mm.
By the design and processes requirement, between locking slot and kerve, there is not breaking groove, breaking groove is in the shape of the letter V.
Among the present invention, the nominal diameter of rivet locking slot is greater than the nominal diameter of kerve, and the nominal diameter of riveting cover endoporus is greater than the diameter of claiming of locking slot.
In preparation rivet process, the metal bar that is adopted is Cr17Ni2,20MnTiB or 40CrMnMo.
The step of rivet being carried out quenching heat treatment comprises:
Cr17Ni2 stainless steel rivet heating-up temperature in the electric furnace of nitrogen protection is 950-1050 ℃, is incubated and in oil, is cooled to room temperature after 1.5-3 hour.Wherein, the temperature of quenching heat treatment can be controlled at 950-1050 ℃ according to the requirement of mechanical property, and holding time was controlled at 1.5-3 hour according to the workpiece size.
The step of the Cr17Ni2 stainless steel rivet being carried out tempering heat treatment comprises: the rivet that will pass through quenching heat treatment heats 550-700 ℃ in the nitrogen protection electric furnace, is incubated after 1.5-3 hour, takes out rivet air cooling or water-cooled to room temperature.Wherein, tempering temperature can be controlled at 550-700 ℃ according to the mechanical property requirement, and holding time was controlled at 1.5-3 hour according to the workpiece size.
Particularly, when the metal bar that is adopted was 20MnTiB or 40CrMnMo, the quenching heat treatment temperature was 850-900 ℃, and tempering temperature is 500-600 ℃, and quenching is identical with the stainless steel holding time with tempering insulation time, but shielding gas atmosphere is the methyl alcohol cracking gas.
Wherein, when the nominal diameter of locking slot≤22mm, the cylindric metallic material of employing is preferably 20MnTiB; When the nominal diameter of locking slot＞22mm, the cylindric metallic material of employing is preferably 40CrMnMo.
The present invention carries out heat treatment to carbon steel riveting cover and is annealing heat treatment, comprising: at first riveting is placed in the body of heater that is full of methyl alcohol protection gas; Be heated to 600-700 ℃, be incubated after 1.5-3 hour, take out riveting cover air cooling to room temperature.Wherein, the heat treated temperature of annealing can be controlled at 600-700 ℃ according to the mechanical property requirement, and holding time was controlled at 1.5-3 hour according to workpiece size, makes hardness HRB≤80 of riveting cover after the annealing heat treatment.
When the cylindric metallic material that particularly in preparation riveting cover process, is adopted is No. 15 steel or No. 20 steel, the riveting cover is carried out heat treatment be annealing heat treatment.
It is solution treatment that the present invention carries out heat treatment to stainless steel riveting cover, comprising: at first riveting is placed in the electric furnace that is full of nitrogen; Be heated to 1000-1100 ℃, be incubated after 1.5-3 hour, take out riveting cover water-cooled to room temperature.Can carry out repeatedly solution treatment as required, make hardness HRB≤90 of riveting cover after the solution treatment.
When the metal bar that particularly in preparation riveting cover process, is adopted was 0Cr18Ni9, it was solution treatment that the riveting cover is carried out heat treatment.
Protection aerial root during the present invention heat-treats is different according to the difference of material, and wherein: when metallic material was stainless steel, shielding gas atmosphere was the empty nitrogen that divides; During all the other steel, protection gas is the methyl alcohol cracking gas, uses oxygen probe that the carbon potential of methyl alcohol cracking gas and the carbon content of cylindric metallic material are consistent.To rivet and riveting cover are carried out being full of in the heat treated stove protection gas,, thereby prevent rivet and the oxidation of riveting cover in heat treatment process, decarburization so that with the air emptying in the stove.
The production method of high-strength rivet connection pair of the present invention also comprises carries out overlay coating corrosion protection processing to rivet and riveting cover, and the rivet connection pair after the riveted joint is carried out the cover coat corrosion protection handle.
The production method of short-tail high-strength rivet connection pair of the present invention has the following advantages:
1, the present invention adopts alloyed steel, and low carbon steel and stainless steel be as the raw material of rivet and riveting cover, and selects corresponding heat treatment process and parameter according to the characteristic of different materials, has not only enlarged the choices of raw materials scope, and has reduced the auxiliary connection manufacture cost.Various raw-material rivets of the present invention and riveting are enclosed within all has good comprehensive mechanical performance after Overheating Treatment, meet the requirement of international standard ISO 898.18.8 level;
2, the manufacturing process of short-tail high-strength rivet connection pair of the present invention is left locating slot on the locking slot of rivet; And on the bore area of riveting cover, extrude the flange that matches with locating slot, when riveting, after the flange that riveting puts compresses along the locating slot propelling; Turning an angle is the lockable mounting point again; Riveting cover and rivet can carry out extruded-riveted according to predetermined mounting point, thereby have guaranteed that rivet connection pair installation when riveted joint is accurate, and construction steadily; Improve the quality of riveted joint construction, practiced thrift human resources and cost;
3, the short-tail high-strength rivet connection pair kerve of the present invention preparation design for short-tail, and its length is 20-40mm, only be the Haake rivet draw half of rear length, thereby help resources conservation; In addition, the present invention adopts cold rolling technology after the heat treatment, makes on the rivet locking slot and forms annular recess, can improve the fatigue life of rivet significantly;
4, the high-strength rivet connection pair construction work performance of the present invention's preparation can detect at any time, and reaches USS United States Standard US, MIL, the regulation of P-23469.In addition, can also carry out surperficial corrosion protection to auxiliary connection as required handles.Rivet connection pair has wide range of applications, and can satisfy the needs of China's economic construction and national defense construction in all directions.
Description of drawings
Fig. 1 is the structural representation of rivet;
Fig. 2 is the groove structure schematic representation of rivet locking slot and kerve;
Fig. 3 is the A-A cut-away view of Fig. 1;
Fig. 4 is the structural representation of riveting cover;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is rivet and riveting cover scheme of installation.
The specific embodiment mode
Further describe the present invention below in conjunction with specific embodiment.Advantage of the present invention and characteristics will be more clear along with description.But these embodiments only are exemplary, scope of the present invention are not constituted any restriction.It will be understood by those skilled in the art that and down can make amendment with form or replace without departing from the spirit and scope of the present invention, but these modifications and replacing all fall in protection scope of the present invention the details of technological scheme of the present invention.
1, the preparation of rivet
(1) preparation ailhead
It is cylindric metallic material 20MnTiB that present embodiment prepares the material that rivet selects for use, and its nominal diameter is 16mm;
Through the temperature rammer cylindric metallic material 20MnTiB is carried out heading, make its formation have the rivet of ailhead 1 and shaft 2, can as required ailhead 1 be processed cup head, homalocephalus, big round end and countersunk head;
Except temperature is upset, can also adopt cold-heading that cylindric metallic material is carried out machine shaping in the present embodiment;
(2) quenching heat treatment
Rivet is placed the continuous mesh belt type hardening furnace, in mesh-belt furnace, be full of the methyl alcohol cracking gas, use oxygen probe that the carbon potential of methyl alcohol cracking gas and the carbon content of cylindric metallic material are consistent as shielding gas atmosphere, preventing the oxidation of rivet, decarburization;
Rivet is heated to 900 ℃, is incubated after 2 hours, water-cooled is to room temperature;
Quenching heat treatment makes rivet obtain required martensitic structure, and the temperature of quenching heat treatment can require to be controlled at 850-900 ℃ according to mechanical property.Holding time, according to the controlled amount of workpiece built in 1.5-3 hour; Quenching medium can also use oil except water;
(3) tempering heat treatment
The rivet that will pass through quenching heat treatment places the continuous mesh belt type tempering furnace, in stove, is full of the methyl alcohol cracking gas as protection gas, uses oxygen probe that the carbon potential of methyl alcohol cracking gas and the carbon content of cylindric metallic material are consistent;
Body of heater is heated to 500-600 ℃, is incubated after 2 hours, take out rivet and be water-cooled to room temperature;
Tempering heat treatment makes rivet have needed intensity plasticity and toughness; The temperature of tempering heat treatment can require to be controlled at 500-600 ℃ according to mechanical property, holding time according to the controlled amount of workpiece built in 1.5-3 hour;
(4) finish turning, ground
Through the shaft after the tempering being carried out finish turning or ground, footpath in footpath and the kerve 8 in the formation locking slot 5;
(5) cold rolling is handled
Rivet after finish turning or the ground carries out cold rolling to be handled; Make on the surface of locking slot 5 and kerve 8 and form discontinuous annular recess (as shown in Figure 2); Locking slot 5 is used for riveting cover and rivet, and kerve 8 is used in the riveted joint process kerve being clamped and fixing; Shaft 2 forms polished rod portion 4 respectively from ailhead 1 end, locking slot 5 and kerve 8, and wherein, the length of kerve 8 is 20-40mm;
The kerve 8 of rivet of the present invention is for short-tail designs, and its length can be designed to 30mm according to concrete needs; The length of polished rod portion 4 can be confirmed according to the requirement of different grips;
(6) finish turning is handled
Between locking slot 5 and kerve 8, carry out the finish turning processing, make and form V-shape breaking groove 7 between locking slot 5 and the kerve 8;
(7) milling is handled
After forming breaking groove 7, on the end excircle of locking slot 5, mill processing, leave locating slot 6 (shown in Fig. 1-3) near breaking groove 7;
(8) surperficial corrosion protection is handled
Rivet behind the formation locating slot 6 is carried out surperficial corrosion protection to be handled.
2, the preparation of riveting cover
(1) preparation flange
It is No. 15 steel of cylindric metallic material that present embodiment prepares the material that the riveting cover selects for use, and the nominal diameter (16mm) of the nominal diameter of 3 endoporus greater than locking slot 5 overlapped in riveting;
Through cold-heading or temperature rammer No. 15 steel of cylindric metallic material are processed, made its formation have the flange riveting cover of flange 10 and body 9;
Except cold-heading, temperature are upset, can also adopt cold hobbing that cylindric metallic material is processed in the present embodiment; Except No. 15 steel, No. 20 steel also is applicable to present embodiment;
(2) the belling edge is handled
Bore area to body 9 carries out the processing of belling edge, on body 9 end bore areas, extrudes the flange 11 (like Fig. 4, shown in 5) that is complementary with locking slot 5;
(3) annealing heat treatment
The riveting that extrudes flange is placed in the mesh belt type continuous oven, in stove, is full of the methyl alcohol cracking gas, use oxygen probe to make the carbon potential of methyl alcohol cracking gas and the carbon content of cylindric metallic material keep causing as protection gas;
Body of heater is heated to 700 ℃, is incubated after 2 hours, take out riveting cover air cooling to room temperature, the hardness HR of riveting this moment cover
B≤80;
Annealing heat treatment improves plasticity in order to reduce the hardness of riveting cover, in order to follow-up plastic deformation processing.The heat treated temperature of annealing can require be controlled at 600-700 ℃ according to mechanical property, holding time, according to the controlled amount of workpiece built in 1.5-3 hour;
(4) surperficial corrosion protection is handled
Riveting cover after the annealing heat treatment is carried out surperficial corrosion protection to be handled.
3, high-strength rivet connection pair construction work Performance Detection
(1) the riveting cover is installed
After rivet passed steel construction piece to be connected, the riveting cover is enclosed within on the locking slot 5 of rivet, the flange 11 that riveting puts advances along locating slot 6 and compresses, and is lockable mounting point (as shown in Figure 6) after the riveting cover is turned an angle;
(2) riveted joint
After the riveting cover is installed locking, implement riveting process by the riveting machine of special use.The claw of riveting gun clamps kerve 8, and extrusion die entangles body 9 and extruding forward, makes the endoporus material of body 9 engaging-in in rivet locking slot 5, makes rivet become as a whole, never becoming loose with riveting cover riveted.Breaking groove 7 is broken, and promptly accomplishes riveted joint;
(3) construction work Performance Detection
Adopt high-strength rivet connection pair clamping force detector (notice of authorization number be CN 100483092C) to detect the clamping force of high-strength rivet connection pair, but nondestructive demounting and adopt the pulling-out force and the shearing force of special detector detection high-strength rivet connection pair after the detection;
Through detecting, the construction work performance of the high-strength rivet connection pair of present embodiment preparation reaches USS United States Standard US, MIL, the regulation of P-23469.
In the preparation process of rivet, removing the material of selecting for use in step (1) the preparation ailhead is metal bar 40CrMnMo, and its nominal diameter is 22mm; Heat treatment temperature is controlled at 800-900 ℃ in step (2) quenching heat treatment, and holding time is 1.5-3 hour; Heat treated temperature is controlled at 500-600 ℃ in step (3) tempering heat treatment, and holding time is 1.5-3 hour; In step (4) finish turning, the ground, the length of drawing rear is outside the 30mm, and all the other are all identical with embodiment 1.
Through detecting, the construction work performance of the high-strength rivet connection pair of present embodiment preparation reaches USS United States Standard US, MIL, the regulation of P-23469.
Embodiment 3
1, the preparation of rivet
(1) preparation ailhead
It is cylindric metallic material annealed state Cr17Ni2 that present embodiment prepares the material that rivet selects for use, and its nominal diameter is 16mm;
Through the temperature rammer cylindric metallic material annealed state Cr17Ni2 is processed, make its formation have the rivet of ailhead 1 and shaft 2, can as required ailhead 1 be processed shapes such as cup head, homalocephalus, big round end and countersunk head;
Except temperature is upset, can also adopt cold hobbing that cylindric metallic material is handled in the present embodiment;
(2) quenching heat treatment
Rivet is placed the electric furnace of nitrogen protection, be heated to 1000 ℃, be incubated after 2 hours, oil cooling is to room temperature fast;
The temperature of quenching heat treatment can be controlled at 950-1050 ℃ according to the mechanical property requirement in the present embodiment; Holding time was controlled at 1.5-3 hour according to the workpiece size.
(3) tempering heat treatment
The rivet that will pass through quenching heat treatment places the electric furnace of nitrogen protection, is heated to 650 ℃, is incubated after 2 hours, and oil or water-cooled are to room temperature;
The temperature of tempering heat treatment in the present embodiment can require to be controlled at 650-700 ℃ according to mechanical property; Holding time was controlled at 1.5-3 hour according to the workpiece size.
Other step in the present embodiment, i.e. step (4) finish turning, ground; Step (5) cold rolling is handled; Step (6) finish turning is handled; Step (7) is milled processing; The surperficial corrosion protection of step (8) is handled, and is all identical with embodiment 1, promptly makes the rivet of present embodiment.
2, the preparation of riveting cover
(1) preparation flange
It is cylindric metallic material 0Cr18Ni9 that present embodiment prepares the material that the riveting cover selects for use, and the nominal diameter (16mm) of the nominal diameter of 3 endoporus greater than locking section 5 overlapped in riveting.
Upset through temperature cylindric metallic material 0Cr18Ni9 steel processed, make its formation have pullover 10 with the flange riveting cover of riveting cover 9;
In the present embodiment, except temperature is upset, can also adopt cold hobbing to cylindric metal material processing moulding;
(2) the belling edge is handled
Bore area to body 9 carries out the processing of belling edge, on body 9 end bore areas, extrudes the flange 11 that is complementary with locating slot 6;
(3) solution treatment
The riveting that extrudes flange is placed in the nitrogen protection electric furnace, is heated to 1000 ℃, be incubated after 2 hours, air or water-cooled be to room temperature, the hardness HR that riveting is overlapped
B≤90;
Solution treatment plays emollescence; The temperature of solution treatment can require to be controlled at 950-1050 ℃ according to mechanical property; Holding time was controlled at 1.5-3 hour according to the workpiece size;
(4) surperficial corrosion protection is handled
Riveting cover after the annealing heat treatment is carried out surperficial corrosion protection handle, promptly make the riveting cover.
Through detecting, the construction work performance of the high-strength rivet connection pair of present embodiment preparation reaches USS United States Standard US, MIL, the regulation of P-23469.
Claims (10)
1. plant the production method of short-tail high-strength rivet connection pair, it is characterized in that, comprise the steps:
1) preparation rivet comprises:
1.1) handle through cylindric metallic material being carried out warm rammer, cold-heading or cold hobbing, form rivet with ailhead (1) and shaft (2);
1.2) rivet is quenched and tempering heat treatment successively;
1.3) through to quenching and tempering heat treatment rivet shaft (2) carries out finish turning or ground, the footpath that said shaft (2) undergauge is become be used for making locking slot (5) and kerve (8);
1.4) shaft in footpath in said is carried out the cold rolling processing, process locking slot (5) and kerve (8) with discontinuous annular recess;
1.5) between locking slot (5) and kerve (8), leave breaking groove (7);
2) preparation riveting cover comprises:
2.1) handle through cylindric metallic material being carried out warm rammer, cold-heading or cold hobbing, form riveting cover with pullover (10) and body (9);
2.2) the riveting cover is carried out heat treatment.
2. production method as claimed in claim 1; It is characterized in that; Also be included in said step 1.5) step of the locating slot of on locking slot (5) excircle, leaving that is used for locating body (9) (6) carried out afterwards, and in said step 2.1) step that on body (9) bore area, extrudes the flange (11) that is complementary with locating slot (6) carried out afterwards.
3. production method as claimed in claim 1 is characterized in that, the step of rivet being carried out quenching heat treatment comprises:
Rivet is placed the electric furnace that is full of shielding gas atmosphere of sealing;
Body of heater is heated to 950-1050 ℃, is incubated after 1.5-3 hour, take out rivet;
To take out rivet water-cooled or oil cooling to room temperature.
4. production method as claimed in claim 1 is characterized in that, the step of rivet being carried out tempering heat treatment comprises:
The rivet that will pass through quenching heat treatment places the body of heater that is full of protection gas of sealing;
Body of heater is heated to 550-700 ℃, is incubated after 1.5-3 hour, take out rivet;
To take out rivet air cooling or water-cooled to room temperature.
5. production method as claimed in claim 1 is characterized in that, the riveting cover is carried out heat treatment be annealing heat treatment, comprising:
Riveting is placed in the body of heater that is full of protection gas of sealing;
Body of heater is heated to 600-700 ℃, is incubated after 1.53 hours, take out the riveting cover;
To take out riveting cover air cooling to room temperature.
6. production method as claimed in claim 1 is characterized in that, it is solution treatment that the riveting cover is carried out heat treatment, comprising:
Riveting is placed in the body of heater that is full of protection gas of sealing;
Body of heater is heated to 1000-1100 ℃, is incubated after 1.5-3 hour, take out the riveting cover;
To take out riveting cover water-cooled to room temperature.
7. as appointing described production method among the claim 3-6, it is characterized in that when said cylindric metallic material was stainless steel, said protection gas was the empty nitrogen that divides.
8. as appointing described production method among the claim 3-6, it is characterized in that when said cylindric metallic material was all the other steel outside the stainless steel, said protection gas was the methyl alcohol cracking gas.
9. production method as claimed in claim 1 is characterized in that step 1.1) in cylindric metallic material be Cr17Ni2,20MnTiB or 40CrMnMo, step 2.1) in cylindric metallic material be No. 15 steel, No. 20 steel or 0Cr18Ni9.
10. production method as claimed in claim 2 is characterized in that, the flange (11) of said body (9) is used for inserting in the rivet locating slot (6), so that by riveting machine the endoporus material of body (9) is got in the locking slot (5) of rivet subsequently.
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|---|---|---|---|
| CN201210208936.4A CN102840205B (en) | 2011-06-22 | 2012-06-21 | A kind of manufacture method of short-tail high-strength rivet connecting pair |
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| CN2011101693526A CN102345658A (en) | 2011-06-22 | 2011-06-22 | Bobtail high-strength rivet connection pair and manufacturing method thereof |
| CN201110169352.6 | 2011-06-22 | ||
| CN201210208936.4A CN102840205B (en) | 2011-06-22 | 2012-06-21 | A kind of manufacture method of short-tail high-strength rivet connecting pair |
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| CN102840205A true CN102840205A (en) | 2012-12-26 |
| CN102840205B CN102840205B (en) | 2015-12-16 |
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| CN2011101693526A Pending CN102345658A (en) | 2011-06-22 | 2011-06-22 | Bobtail high-strength rivet connection pair and manufacturing method thereof |
| CN201210208936.4A Expired - Fee Related CN102840205B (en) | 2011-06-22 | 2012-06-21 | A kind of manufacture method of short-tail high-strength rivet connecting pair |
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| CN2011101693526A Pending CN102345658A (en) | 2011-06-22 | 2011-06-22 | Bobtail high-strength rivet connection pair and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100622A (en) * | 2013-04-08 | 2014-10-15 | 彭亮生 | Large-scale and high-intensity rivet connection pair and manufacturing method thereof |
| CN108134362A (en) * | 2018-01-05 | 2018-06-08 | 哈尔滨工程大学 | Integrated Anti-extrusion high-voltage cable joint |
| CN108286555A (en) * | 2018-04-19 | 2018-07-17 | 无锡安士达五金有限公司 | Annular groove garland snap riveting is followed closely |
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| CN102345658A (en) * | 2011-06-22 | 2012-02-08 | 彭亮生 | Bobtail high-strength rivet connection pair and manufacturing method thereof |
| CN106222394A (en) * | 2016-08-31 | 2016-12-14 | 株洲春华实业有限责任公司 | A kind of Technology for Heating Processing of BOM rivet collar |
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| CN108286555A (en) * | 2018-04-19 | 2018-07-17 | 无锡安士达五金有限公司 | Annular groove garland snap riveting is followed closely |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102840205B (en) | 2015-12-16 |
| CN102345658A (en) | 2012-02-08 |
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