CN104928574A - Manufacturing method for track roller of engineering machinery with high abrasion resistance - Google Patents
Manufacturing method for track roller of engineering machinery with high abrasion resistance Download PDFInfo
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- CN104928574A CN104928574A CN201510390840.8A CN201510390840A CN104928574A CN 104928574 A CN104928574 A CN 104928574A CN 201510390840 A CN201510390840 A CN 201510390840A CN 104928574 A CN104928574 A CN 104928574A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses a manufacturing method for a track roller of engineering machinery with high abrasion resistance. The method comprises the steps that low and medium carbon alloy steel with Mn and B elements is selected, by means of the medium-frequency induction heat treatment technology, the hardness of the surface of the low and medium carbon alloy steel reaches over HRC52, and the depth of a hardened layer reaches over 12 mm. Compared with the prior art, according to the manufacturing method for the track roller of engineering machinery with the high abrasion resistance, the low and medium carbon alloy steel with the Mn and B elements is selected, by means of the medium-frequency induction heat treatment technology, the hardness of the surface of the low and medium carbon alloy steel reaches over HRC52, and the depth of the hardened layer reaches over 12 mm, and the anti-abrasion service life is over one time than that of previous materials.
Description
Technical field
The present invention relates to a kind of manufacture method of high-wearing feature thrust wheel for engineering machinery, belong to field of metal surface treatment.
Background technology
Thrust wheel is the one during tracked construction equipment chassis four-wheel one is with, and its Main Function is the weight that support excavator and dozer, allows crawler belt advance along wheel.
The general 50Mn of thrust wheel wheel body material, 40Mn, etc. material, main technique casting or forging, mechanical workout, then heat-treats, wheel surface quenching after hardness to reach HRC45 ~ 52, to increase the wear resistance of wheel surface.The requirement on machining accuracy of supporting wheel shaft is higher, and being generally needs numerically-controlled machine to carry out processing and just can reach requirement.Material is more with 40Mn, and also will carry out quenching heat treatment after processing, hardness reaches about HRC42.
Summary of the invention
The technical problem to be solved in the present invention improves thrust wheel material surface treatment process, improves the hardness of thrust wheel.
Technical scheme of the present invention is:
A manufacture method for high-wearing feature thrust wheel for engineering machinery, chooses containing low-carbon alloy steel in Mn, B element, and by intermediate-frequency induction heating technique, make its surface reach more than hardness HRC52, case depth reaches more than 12mm.
Further, containing in low-carbon alloy steel in Mn, B element, C content is 0.32 ~ 0.37wt%, Mn content be 1.15 ~ 1.32wt%, B content is 0.0005 ~ 0.0030wt%, Mo content, 0.25 ~ 0.5wt%.
Further, described intermediate-frequency induction heating technique is: medium frequency induction hardening, induction quenching frequency 1000 ~ 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 10 ~ 40 DEG C.
Further, comprise the following steps:
1) steel of to choose C content be 0.32 ~ 0.37wt%, Mn content to be 1.15 ~ 1.32wt%, B content be 0.0005 ~ 0.0030wt%, Mo content, 0.25 ~ 0.5wt%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness in HRC35 ~ 40;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 1000 ~ 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 10 ~ 40 DEG C; Make its surface hardness reach HRC52 ~ 62, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
Compared with prior art, the present invention uses the middle low-carbon alloy steel containing Mn, B element, and by suitable intermediate-frequency induction heating technique, make its surface reach more than hardness HRC52, case depth reaches more than 12mm, and its friction durability is raw-material more than one times.
Embodiment
Below in conjunction with embodiment, the present invention is further explained.
Embodiment 1
1) to choose C content be 0.32wt%, Mn content be 1.15wt%, B content is 0.0005wt%, Mo content 0.25wt%.Steel;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness at HRC35;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 1000Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 10 DEG C; Make its surface hardness reach HRC52, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
Embodiment 2
1) steel of to choose C content be 0.37wt%, Mn content to be 1.32wt%, B content be 0.0030wt%, Mo content 0.5wt%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness in HRC35 ~ 40;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 40 DEG C; Make its surface hardness reach HRC62, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
Embodiment 3
1) steel of to choose C content be 0.35wt%, Mn content to be 1.22wt%, B content be 0.002wt%, Mo content 0.3w%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness at HRC38;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 1500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 20 DEG C; Make its surface hardness reach HRC55, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
Embodiment 4
1) steel of to choose C content be 0.32wt%, Mn content to be 1.32wt%, B content be 0.0030wt%, Mo content 0.25wt%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness in HRC35 ~ 40;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 1800Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 30 DEG C; Make its surface hardness reach HRC58, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
Embodiment 5
1) steel of to choose C content be 0.37wt%, Mn content to be 1.15wt%, B content be 0.0010wt%, Mo content 0.4wt%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness at HRC38;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 40 DEG C; Make its surface hardness reach HRC62, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
The foregoing is only the preferred embodiments of the present invention; can not be interpreted as limiting scope of the present invention with this, the equivalent distortion made in all scopes claimed at claims of the present invention and the embodiment of change are all in the present invention's scope required for protection.
Claims (4)
1. the manufacture method of a high-wearing feature thrust wheel for engineering machinery, it is characterized in that, choose containing low-carbon alloy steel in Mn, B element, by Medium frequency induction intermediate-frequency induction heating technique, make its surface reach more than hardness HRC52, case depth reaches more than 12mm.
2. the manufacture method of a kind of high-wearing feature thrust wheel for engineering machinery according to claim 1, it is characterized in that, containing in low-carbon alloy steel in Mn, B element, C content is 0.32 ~ 0.37wt%, Mn content is 1.15 ~ 1.32wt%, B content is 0.0005 ~ 0.0030wt%, Mo content, 0.25 ~ 0.5wt%.
3. the manufacture method of a kind of high-wearing feature thrust wheel for engineering machinery according to claim 1, it is characterized in that, described intermediate-frequency induction heating technique is: medium frequency induction hardening, induction quenching frequency 1000 ~ 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 10 ~ 40 DEG C.
4. the manufacture method of a kind of high-wearing feature thrust wheel for engineering machinery according to any one of claim 1-3, is characterized in that, comprise the following steps:
1) steel of to choose C content be 0.32 ~ 0.37wt%, Mn content to be 1.15 ~ 1.32wt%, B content be 0.0005 ~ 0.0030wt%, Mo content, 0.25 ~ 0.5wt%;
2) die-forging forming, Forge Heating temperature 1050 DEG C, after forging, isothermal is incubated 850 DEG C, forging time 2h, quenching oil entire body quenching 20min, and after cooling, adopt 450 DEG C of tempering 2h, cooling, reaches integral hardness in HRC35 ~ 40;
3) roughing;
4) medium frequency induction hardening, induction quenching frequency 1000 ~ 2500Hz, voltage of supply 350V, supply current 350 ± 20A, power 125 ± 10Kw, inductor block temperature out 880 ± 50 DEG C; Water-jet temperature in 780 ± 30 DEG C, uses hardening liquid continuous coo1ing, hardening liquid concentration 5 ± 1%, hardening liquid flow 110 ± 10, quench fluid temperature 10 ~ 40 DEG C; Make its surface hardness reach HRC52 ~ 62, case depth reaches more than 12mm.
5) precision work;
6) thrust wheel is assembled into.
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| CN201510390840.8A CN104928574B (en) | 2015-07-06 | 2015-07-06 | A kind of manufacture method of high-wearing feature thrust wheel for engineering machinery |
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| CN201510390840.8A CN104928574B (en) | 2015-07-06 | 2015-07-06 | A kind of manufacture method of high-wearing feature thrust wheel for engineering machinery |
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| CN104928574A true CN104928574A (en) | 2015-09-23 |
| CN104928574B CN104928574B (en) | 2017-06-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457326A (en) * | 2009-01-08 | 2009-06-17 | 杨洪根 | Medium-carbon and low-alloy structural steel and its application in caterpillar machinery chassis member |
| CN202243758U (en) * | 2011-09-15 | 2012-05-30 | 中联重科股份有限公司 | Track shoe and engineering machine |
| CN103556059A (en) * | 2013-11-01 | 2014-02-05 | 常熟华威履带有限公司 | Track link pin material |
| CN103805898A (en) * | 2013-11-25 | 2014-05-21 | 内蒙古包钢钢联股份有限公司 | Steel for V-TI-RE micro-alloy caterpillar band and heat treatment process thereof |
| CN103882331A (en) * | 2014-02-25 | 2014-06-25 | 南通东方科技有限公司 | High-strength and high-wear-resistant supporting wheel for large type excavator |
| CN203946186U (en) * | 2014-06-26 | 2014-11-19 | 昆山土山建设部件有限公司 | A kind of caterpillar wheel |
-
2015
- 2015-07-06 CN CN201510390840.8A patent/CN104928574B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457326A (en) * | 2009-01-08 | 2009-06-17 | 杨洪根 | Medium-carbon and low-alloy structural steel and its application in caterpillar machinery chassis member |
| CN202243758U (en) * | 2011-09-15 | 2012-05-30 | 中联重科股份有限公司 | Track shoe and engineering machine |
| CN103556059A (en) * | 2013-11-01 | 2014-02-05 | 常熟华威履带有限公司 | Track link pin material |
| CN103805898A (en) * | 2013-11-25 | 2014-05-21 | 内蒙古包钢钢联股份有限公司 | Steel for V-TI-RE micro-alloy caterpillar band and heat treatment process thereof |
| CN103882331A (en) * | 2014-02-25 | 2014-06-25 | 南通东方科技有限公司 | High-strength and high-wear-resistant supporting wheel for large type excavator |
| CN203946186U (en) * | 2014-06-26 | 2014-11-19 | 昆山土山建设部件有限公司 | A kind of caterpillar wheel |
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