CN103498109B - Excavator bucket tooth and preparation method thereof - Google Patents
Excavator bucket tooth and preparation method thereof Download PDFInfo
- Publication number
- CN103498109B CN103498109B CN201310406564.0A CN201310406564A CN103498109B CN 103498109 B CN103498109 B CN 103498109B CN 201310406564 A CN201310406564 A CN 201310406564A CN 103498109 B CN103498109 B CN 103498109B
- Authority
- CN
- China
- Prior art keywords
- excavator bucket
- bucket teeth
- bucket tooth
- excavator
- teeth
- 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.)
- Expired - Fee Related
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000005496 tempering Methods 0.000 claims description 22
- 238000010791 quenching Methods 0.000 claims description 18
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 230000000171 quenching effect Effects 0.000 claims description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims description 15
- 229910052748 manganese Inorganic materials 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 239000011651 chromium Substances 0.000 description 19
- 239000011572 manganese Substances 0.000 description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 229910001566 austenite Inorganic materials 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000011733 molybdenum Substances 0.000 description 9
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000007669 thermal treatment Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000617 Mangalloy Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000010010 raising Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000000266 injurious effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses an excavator bucket tooth and a preparation method thereof, and solves the problems that conventional bucket teeth are general in wear resistance, impact performance and the like, short in service life and high in production cost. The excavator bucket tooth comprises the components in percents by mass: 0.25-0.29% of C, 1.10-1.40% of Mn, 1.50-1.90% of Si, 1.40-1.70% of Cr, 0.02-0.06% of Al, 0.10-0.15% of Mo, and the balance Fe and unavoidable impurities. The invention also provides the preparation method of the excavator bucket tooth, and the preparation method comprises operations of casting and heat treatment. The excavator bucket tooth is substantially improved in mechanical properties, and especially obviously improved in toughness, hardness, tensile strength, wear resistance and the like, and low in material cost.
Description
Technical field
The present invention relates to a kind of bucket tooth, particularly relate to a kind of excavator bucket teeth and preparation method thereof, belong to metal material field.
Background technology
Bucket tooth belongs to excavator spare and accessory parts, is generally contained in power shovel front end, is widely used in the industries such as mine, metallurgy, electric power, building materials, cement, machinery, directly contact with sand, soil, rock, mineral etc., when contacting material, both withstood shocks effect, bears flecition again.In working process, bucket tooth tip is subject to larger impact-sliding abrasive wear, and surface, tip is normal occurs various ditch dug with a plow, distortion, causes surface abrasion.The factor affecting the excavator bucket teeth life-span is a lot, except ore structures.Soft or hard degree, explosion situation, and applying unit is to outside the maintenance of excavator and the operant level of driver, also has the structure of bucket tooth and the impact of shape, the heat treated impact in material of excavator bucket teeth and preparation method thereof.
Desirable excavator bucket teeth material surface should have high rigidity, high-wearing feature, and matrix should have good mechanical property, high tenacity, thus the features such as length that increase the service life, this is the requirement that single material is difficult to reach simultaneously.Bucket tooth of the prior art generally adopts wear resisting steel, such as Robert Hadfield invent Hadfield steel, its wear resistance and toughness better, but its impelling strength is on the low side, in excavator working process, bucket tooth surface easily causes bulk to come off, and even easily brittle failure occurs.In addition, under high mangaenese steel is generally considered to the abrasive conditions of only cutting in HI high impact or cut a hole by force, surface could produce work hardening layer effectively, shows higher wear resistance, otherwise it is even less than the wear resistance of general steel.And Fe content is higher, therefore, its cost is higher, energy consumption is larger.
For the problems referred to above, Chinese patent application of the prior art (publication number is CN102978531A) discloses a kind of excavator bucket teeth, its chemical composition is C:0.26%-0.29%, Mn:1.30%-1.50%, Si:1.20%-1.40%, Cr:1.40%-1.60%, Mo:0.15%-0.25%, N:0.20%-0.30%, surplus is Fe and inevitable impurity, with and preparation method thereof: casting process and heat treatment step, this bucket tooth mechanical property improves, and can meet the demand of general excavator Working environment.But it is better that relevant staff is still devoted to research mechanical property, longer service life, the excavator bucket teeth that production cost is lower.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, propose a kind of good mechanical property, long service life, the excavator bucket teeth that production cost is low.
Object of the present invention realizes by following technical proposal: a kind of excavator bucket teeth, the moiety of described excavator bucket teeth and mass percent are: C:0.25%-0.29%, Mn:1.10%-1.40%, Si:1.50%-1.90%, Cr:1.40%-1.70%, Al:0.02%-0.06%, Mo:0.10%-0.15%, surplus is Fe and inevitable impurity.
Relative to prior art, bucket tooth of the present invention is by adding Al element, eliminate Ni element, and optimize the proportioning of the compositions such as C, Si, Cr, especially improve Si content and Cr content, make the formula of bucket tooth more reasonable, each element in bucket tooth is made to produce synergy, significantly improve the mechanical property of bucket tooth, especially wear resistance and impelling strength, thus reach the object of prolongs life.
In above-mentioned excavator bucket teeth, in described impurity, the mass percent of S element is less than or equal to 0.30%, and the mass percent of P element is less than or equal to 0.030%.
In excavator bucket teeth of the present invention, carbon content is 0.25%-0.29%.C element, as the fundamental element of steel alloy, can be formed stable (Cr, Fe) with iron, chromium in excavator bucket teeth
7c
3type carbide, also can form carbide with Fe, Mn, improves the hardness of excavator bucket teeth, plasticity and toughness thereof, can ensure enough wear resistancies and temperature tolerance again simultaneously.When C content lower than 0.25% time, carbide tails off, and wear resistance is bad.And when C content is more than 0.29%, the physical strength of the excavator bucket teeth especially plasticity of bucket tooth and impelling strength is significantly deteriorated, the atmospheric corrosion resistance ability that also can reduce, the easy corrosion in place in the open.Therefore the mass percent of the carbon in excavator bucket teeth of the present invention is controlled at 0.25%-0.29%, carbon and other elements can be made to produce act synergistically, and along with the increase of carbon content, the yield-point of bucket tooth and tensile strength raise, thus make the bucket tooth in the present invention have good over-all properties.
Manganese is strengthening element main in excavator bucket teeth, in excavator bucket teeth, mainly play the effects such as deoxidation degasification, desulfurization and raising hardening capacity.In general steel, the content of manganese is 0.30%-0.50%, and the manganese adding more than 0.70% in carbon steel is " manganese steel ", compared with general steel, manganese steel not only has enough toughness, also there is higher intensity and hardness, the quenching property of steel can be improved, improve the hot workability of steel.But Fe content is too high, the resistance to corrosion of bucket tooth can be weakened, reduce welding property.In excavator bucket teeth of the present invention, Fe content is 1.10%-1.40%, improves the wear resistance of bucket tooth, temperature tolerance significantly, its reason is one, manganese in excavator bucket teeth can in and the deleterious effect of ferro element, generate (FeMn) with iron
3c type carbide, makes ferro element only play its positive effect, improves the hardening capacity of bucket tooth; Two, its content of deoxidation must more than 0.6% in bucket tooth for manganese, if but Fe content is too high, the wear resistance of bucket tooth can be affected; Three, under the prerequisite ensureing austenite structure, the reduction of Fe content can cause stabilization of austenite slightly to decline, but the wear resistance of bucket tooth can significantly improve under the effect of high impact, and workhardness also significantly strengthens; Four, in bucket tooth, add manganese element can refiner material tissue, improves recrystallization temperature, thus strengthens excavator bucket teeth in use because of thermotolerance when friction produces high temperature.
Element silicon is dissolved in ferrite in excavator bucket teeth, strongly inhibited can decompose with the carbide alleviating supercooled austenite, improves stabilization of austenite.Element silicon is good reductive agent and reductor in excavator bucket teeth, and its content coordinates with manganese element content, effectively can improve the toughness of excavator bucket teeth, improves the wear resistance of excavator bucket teeth, intensity and hardness.Greatly increase the content of silicon in excavator bucket teeth of the present invention, be 1.50%-1.90%, the intensity 15%-20% of excavator bucket teeth can be improved.The Si adding high level can increase residual austenite content in the stability of supercooled austenite and steel in continuous cooling process, and the strong precipitation hindering carbide, improves the resistance to tempering of excavator bucket teeth.Equally, Si too high levels can reduce the welding property of excavator bucket teeth.
Cr, as important alloying element, can significantly improve the intensity of excavator bucket teeth, hardness and wear resistance, can also improve oxidation-resistance and the erosion resistance of excavator bucket teeth, but slightly can reduce plasticity and the toughness of excavator bucket teeth simultaneously.Chromium content in bucket tooth of the present invention is 1.40%-1.70%.The radius of chromium atom is 2.810 on the one hand
-10m, and iron atom radius is 2.710
-10m, both are very close, and chromium is stronger than other elements with the avidity of iron, are easily combined with carbon, iron and form (Cr, Fe)
3c and a small amount of (FeCr)
7c
3dissolve in sosoloid, can matrix be strengthened, improve the hardening capacity of bucket tooth.In excavator bucket teeth, add Cr element can change carbide dispersion distributional pattern in steel on the other hand, obtains with Cr
23c
6be main granular carbide, make its Dispersed precipitate on Ovshinsky matrix.If Cr content is too low, the erosion resistance of excavator bucket teeth is not good, if Cr too high levels, the toughness of excavator bucket teeth is not good.The mass percent of chromium element controls at 1.40%-1.70% by mechanical property the present invention of comprehensive excavator bucket teeth, chromium and other elements can be made to produce and act synergistically, thus make the excavator bucket teeth in the application have good wear resistance.
Al is reductor conventional in excavator bucket teeth, adds a small amount of Al in bucket tooth, can crystal grain thinning, improves impelling strength.Al also has antioxidant and corrosion resistance, and Al and Si share, and can significantly improve high temperature non-scale performance and the high-temperature corrosion resistance performance of steel.But Al can affect the hot workability of bucket tooth, welding property and machinability.Therefore, in excavator bucket teeth of the present invention, the content of Al controls at 0.02%-0.06%, while raising bucket tooth over-all properties, can ensure its welding property, processing characteristics again.
The molybdenum element of crystal grain thinning is added in excavator bucket teeth of the present invention, three aspect effects can be played: one, molybdenum can suppress cementite to be assembled effectively, cause the carbide of molybdenum with superfine small size Dispersed precipitate in austenite, simultaneously can dispersion-strengthened action, strengthening austenite structure, the intensity of bucket tooth and hardness are increased, strain-hardening performance enhancement.Two, molybdenum is distributed in the precipitation that effectively can suppress grain boundary carbide in excavator bucket teeth process of cooling in carbide, in bucket tooth, chromatize can make grain boundary carbide precipitation tendency greatly improve, and the compound of molybdenum and chromium two kinds of elements is added can make the beneficial effect of two kinds of alloying elements bring into play simultaneously.Three, after adding molybdenum in bucket tooth, acicular carbide shortens, and quantity obviously reduces.Through test known when add about 0.1% molybdenum time, can reduce or restrain the temper brittleness that other alloying elements cause.Under higher tempering temperature, form the alloy carbide filling the air distribution, have secondary hardening effect.Coordinate with manganese to add in excavator bucket teeth and more effectively can play molybdenum and the effect of manganese in bucket tooth, improve the mechanical property such as hardness, hardening capacity of excavator bucket teeth.But the price of molybdenum element is more expensive, adds and too much can increase production cost, therefore the present invention is ensureing the content controlling molybdenum while molybdenum can play a role preferably in bucket tooth, is controlled between 0.10%-0.15%.
The present invention adopts the interaction of each element proportioning, all has obvious effect to the hardening capacity of excavator bucket teeth, hardenability, austenitic stability.
Sulphur is generally the harmful element in excavator bucket teeth, excavator bucket teeth can be made to produce red brittleness, reduce ductility and the toughness of excavator bucket teeth, but when sulphur content is less than 0.03%, its deleterious effect is just so unobvious, can also improve the processing characteristics of excavator bucket teeth on the contrary.
P and s is the same, and all have special injurious effects to the wear resistance of excavator bucket teeth and mechanical property, the P of every 0.02% on average reduces impelling strength 1.98J/cm
2; When phosphorus drops to 0.02%-0.04% from 0.07%-1.0%, the plasticity of excavator bucket teeth, toughness, wear resistance all can improve 40%-50%, and casting crack also can greatly reduce.The content of phosphorus controls within 0.003% by the present invention, also can avoid intercrystalline precipitation eutectic phosphide.
Further, the moiety of described excavator bucket teeth and mass percent are: C:0.27%, Mn:1.30%, Si:1.60%, Cr:1.50%, Al:0.04%, Mo:0.12%, and surplus is Fe and inevitable impurity.
Further, the moiety of described excavator bucket teeth and mass percent are: C:0.25%, Mn:1.40%, Si:1.50%, Cr:1.70%, Al:0.02%, Mo:0.15%, and surplus is Fe and inevitable impurity.
Further, the moiety of described excavator bucket teeth and mass percent are: C:0.29%, Mn:1.10%, Si:1.90%, Cr:1.40%, Al:0.06%, Mo:0.10%, and surplus is Fe and inevitable impurity.
The present invention also provides a kind of preparation method of above-mentioned excavator bucket teeth, comprises casting process and heat treatment step.In described heat treatment step, quenching temperature is 900 DEG C-950 DEG C, and after quenching, soaking time is 2-4 hour, and tempering temperature is 230 DEG C-260 DEG C, and after tempering, soaking time is 3-4 hour.
The present invention adopts the method not only to simplify production technique, reduces energy consumption, and the performance level after foundry goods can be made equally to have normative heat treatment.Excavator bucket teeth is in heat-processed, and 400 DEG C-700 DEG C time, carbide is constantly separated out and grown up, and when 700 DEG C-900 DEG C, carbide dissolves gradually, when being heated to more than 900 DEG C, even if carbide remaining on crystal boundary also can all dissolve.Due to the existence of the carbide of indissoluble, be necessary to improve its solid solubility temperature, quenching temperature brought up to 900 DEG C-950 DEG C, though the intensity of bucket tooth declines slightly, reach best obdurability and plasticity.The temperature improving quenching is conducive to the homogenizing of composition, reduces high-carbon microcell further, increases the quantity that high dislocation lath strengthens martensite and film like residual austenite, thus improve the obdurability of bucket tooth, strengthen the ability of opposing crack propagation, alleviate stress concentration, improve toughness.And tempering temperature is between 230 DEG C-260 DEG C, tensile strength and the hardness of excavator bucket teeth reduce with the rising of tempering temperature, and impact toughness at room temperature then raises.Low-carbon alloy steel carries out the quenching of austenitizing heat chilling, and can to obtain hardness moderate, and rigidity is good, the low-carbon lath martensite tissue of obdurability.In invar, during the quenching of " C " element, segregation, in dislocation and lath boundaries, causes substructure refinement and high density dislocation to produce solution strengthening.Low-carbon lath martensite is under an electron microscope in lath-shaped distribution parallel to each other, and its main body is made up of the crystal of much thin and thin length, without twin in lath.And when tempering temperature is greater than 260 DEG C, dislocation generation slippage and climbing, causes dislocation desity to reduce, crystal boundary is moved simultaneously, and subgrain merges and causes the every mechanical property of excavator bucket teeth to decline.
In addition, if Heating temperature is on the low side or soaking time is not enough in water-tenacity treatment, carbide can not fully dissolve, and frequent is on austenitic crystal boundary.If Heating temperature is higher in water-tenacity treatment, Austenite Grain Growth will be made.
Further, in described heat treatment step, tempering temperature is 240 DEG C.
The present invention is by the configuration component of specific excavator bucket teeth and the raw material of mass percent, and obtain good mechanical property by special thermal treatment process, especially there is high tenacity, high rigidity, high-tensile, high-wearing feature, and the cost of material is low, meet the excavator bucket teeth of the special Working environment demand of excavator simultaneously.
Embodiment
Table 1: embodiment 1 ~ 3 is for the preparation of the component of excavator bucket teeth and mass percent thereof
Embodiment 1
In the present embodiment in the component of excavator bucket teeth and percent mass such as table 1 thereof shown in embodiment 1.
The component of excavator bucket teeth and the mechanical property of percent mass comparison bucket tooth thereof have a certain impact, and the mechanical property of its preparation technology on the final bucket tooth formed also has larger impact.The preparation technology of bucket tooth comprises casting process and heat treatment step, wherein casting process adopt conventional casting, to the final mechanical impact of bucket tooth maximum be heat treatment step.Heat treatment step comprises that quenching heats up, tempering after insulation, the step of air cooling after tempering.The present embodiment, for inquiring into optimal quenching temperature, tempering temperature, to the thermal treatment test its mechanical property at different conditions of bucket tooth in the present embodiment, obtains experimental result as table 2.
Table 2: the mechanical property of the excavator bucket teeth under embodiment 1 different condition after thermal treatment
As can be seen from Table 2, quenching temperature is 900 DEG C of-950 DEG C of intervals and tempering temperature is 230 DEG C of-260 DEG C of intervals, tensile strength and hardness reduce with the rising of tempering temperature, impact toughness at room temperature then raises, quenching temperature be 920 DEG C, tempering temperature be 240 DEG C time, the impact toughness at room temperature of mechanical property the best of excavator bucket teeth, especially bucket tooth, hardness, wear resistance are better.
Therefore the condition that the implementation case selects the excavator bucket teeth after forging process process to heat-treat is: in heat treatment step, quench when temperature is 920 DEG C, insulation 3 hours after quenching; Carry out tempering when temperature is 240 DEG C, after tempering, be incubated 3 hours again.
The excavator good mechanical property of gained in the present embodiment, especially toughness, hardness and wear resistance are all higher, long service life, and the cost of material is low.
Embodiment 2
Component and the mass percent of excavator bucket teeth is determined by embodiment in table 12, in the present embodiment, excavator bucket teeth is through casting process and heat treatment step, wherein heat treatment step adopts the processing condition the same with embodiment one, namely quench when temperature is 950 DEG C in heat treatment step, insulation 4 hours after quenching; Carry out tempering when temperature is 260 DEG C, after tempering, be incubated 4 hours again.Test its mechanical property as table 3:
Table 3: the mechanical property of the excavator bucket teeth under embodiment 2 different condition after thermal treatment
From above-mentioned test adopt the proportioning of the present embodiment after, utilize the excavator good mechanical property that the processing condition of embodiment one are obtained, especially toughness, hardness and wear resistance are all higher, long service life, and the cost of material is low.
Embodiment 3
Component and the mass percent of excavator bucket teeth is determined by embodiment in table 13, in the present embodiment, excavator bucket teeth is through casting process and heat treatment step, wherein heat treatment step adopts the processing condition the same with embodiment one, namely in heat treatment step, quench when temperature is 900 DEG C, insulation 2 hours after quenching; Carry out tempering when temperature is 230 DEG C, after tempering, be incubated 3 hours again.Test its mechanical property as table 4:
Table 4: the mechanical property of the excavator bucket teeth under embodiment 3 different condition after thermal treatment
From above-mentioned test adopt the proportioning of the present embodiment after, utilize the excavator good mechanical property that the processing condition of embodiment one are obtained, especially toughness, hardness and wear resistance are all higher, long service life, and the cost of material is low.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (1)
1. an excavator bucket teeth, is characterized in that: the moiety of described excavator bucket teeth and mass percent are: C:0.25%, Mn:1.40%, Si:1.50%, Cr:1.70%, Al:0.02%, Mo:0.15%, surplus is Fe and inevitable impurity; In described impurity, the mass percent of S element is less than or equal to 0.03%, and the mass percent of P element is less than or equal to 0.03%;
The preparation method of described excavator bucket teeth comprises casting process and heat treatment step, and in described heat treatment step, quenching temperature is 950 DEG C, and Quenching Soaking Time is 2-4 hour, and tempering temperature is 260 DEG C, and tempering insulation time is 3-4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406564.0A CN103498109B (en) | 2013-09-05 | 2013-09-05 | Excavator bucket tooth and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406564.0A CN103498109B (en) | 2013-09-05 | 2013-09-05 | Excavator bucket tooth and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103498109A CN103498109A (en) | 2014-01-08 |
| CN103498109B true CN103498109B (en) | 2015-07-15 |
Family
ID=49863366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310406564.0A Expired - Fee Related CN103498109B (en) | 2013-09-05 | 2013-09-05 | Excavator bucket tooth and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103498109B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275449B (en) * | 2014-10-21 | 2016-03-23 | 安徽省萧县华龙耐火材料有限责任公司 | A kind of production technology of mixing roll scraper plate |
| CN109175177B (en) * | 2018-09-29 | 2019-12-31 | 河南科技大学 | A kind of preparation method of bucket tooth |
| CN110343973A (en) * | 2019-07-23 | 2019-10-18 | 山东钢铁股份有限公司 | A kind of bucket tooth steel and preparation method thereof |
| CN114875315A (en) * | 2022-04-26 | 2022-08-09 | 湖南华菱湘潭钢铁有限公司 | Low-alloy steel for excavator bucket teeth and production method thereof |
| CN116377189B (en) * | 2023-03-02 | 2023-10-20 | 徐州徐工矿业机械有限公司 | Heat treatment method of wear-resistant bucket teeth for oversized excavator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581062A (en) * | 1981-06-26 | 1983-01-06 | Mitsubishi Heavy Ind Ltd | Corrosion- and abrasion-resistant cast steel |
| CN1600889A (en) * | 2004-10-26 | 2005-03-30 | 宁波浙东精密铸造有限公司 | Micro-alloyed martensitic wear-resistant cast steel and manufacturing method |
| CN102400050A (en) * | 2011-11-13 | 2012-04-04 | 宁波嘉达精密铸造有限公司 | Bucket tooth and preparation method thereof |
| CN102978531A (en) * | 2012-11-09 | 2013-03-20 | 宁波嘉达精密铸造有限公司 | Excavator bucket tooth and preparation method thereof |
-
2013
- 2013-09-05 CN CN201310406564.0A patent/CN103498109B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581062A (en) * | 1981-06-26 | 1983-01-06 | Mitsubishi Heavy Ind Ltd | Corrosion- and abrasion-resistant cast steel |
| CN1600889A (en) * | 2004-10-26 | 2005-03-30 | 宁波浙东精密铸造有限公司 | Micro-alloyed martensitic wear-resistant cast steel and manufacturing method |
| CN102400050A (en) * | 2011-11-13 | 2012-04-04 | 宁波嘉达精密铸造有限公司 | Bucket tooth and preparation method thereof |
| CN102978531A (en) * | 2012-11-09 | 2013-03-20 | 宁波嘉达精密铸造有限公司 | Excavator bucket tooth and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103498109A (en) | 2014-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103205650B (en) | A kind of heat-resistant antifriction steel plate and manufacture method thereof | |
| CN104831189B (en) | HB600 level Micro Alloying wear-resisting steel plate and manufacture method thereof | |
| CN102134682B (en) | Wear resistant steel plate | |
| AU2013222054B2 (en) | Abrasion resistant steel plate with high strength and high toughness, and processing for preparing the same | |
| CN103114245B (en) | A kind of abrasion-proof backing block and preparation method thereof | |
| CN100386462C (en) | A kind of boron-containing multi-component low-alloy wear-resistant cast steel and its preparation method | |
| CN103498109B (en) | Excavator bucket tooth and preparation method thereof | |
| CN102517499A (en) | High-strength and low-cost dilute alloy wear resistant cast steel | |
| CN101469390A (en) | Wear resistant steel cast and method for manufacturing the same | |
| CN101497964A (en) | High hardness and toughness low alloy abrasion resistant steel and use thereof | |
| WO2006136079A1 (en) | An austenite-film toughened martensite wear-resisting cast steel and its manufacture process | |
| CN103397272B (en) | There is wear-resisting steel plate of low crack-sensitivity exponential sum high strength and preparation method thereof | |
| CN101016603A (en) | High-boron cast steel containing granular boride and preparing method thereof | |
| CN102978531B (en) | Excavator bucket tooth and preparation method thereof | |
| CN104451409A (en) | Low-cost HB400-grade wear-resisting steel and production method thereof | |
| KR101704821B1 (en) | Bucket tooth for construction equipment with enhanced abrasion resistance and impact resistance | |
| CN102433506B (en) | High strength wear resistant cast steel free from molybdenum and nickel | |
| CN103194674A (en) | HB360-level wear-resistant steel plate and preparation method thereof | |
| CN102978515B (en) | Excavator toothholder and preparation method thereof | |
| CN103484772B (en) | A kind of excavator toothholder and preparation method thereof | |
| CN102400050B (en) | Bucket tooth and preparation method thereof | |
| CN103243277B (en) | A kind of HB400 level cracking resistance line high strength martensitic wear resisting steel and production method | |
| CN112048668A (en) | High-hardness steel for shield cutter and manufacturing method thereof | |
| CN106893941A (en) | A kind of low-alloy wear-resistant steel and its heat treatment method | |
| CN108467990A (en) | Adapt to the wear-resisting high performance alloys structural steel of middle carbon and low-alloy and its manufacture, heat treatment method of hard environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20210905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |