CN103409688A - Large forged high-speed steel cold roll and manufacturing method thereof - Google Patents
Large forged high-speed steel cold roll and manufacturing method thereof Download PDFInfo
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Abstract
The invention discloses a large forged high-speed steel cold roll and a manufacturing method thereof. The cold roll comprises the following chemical constituents in percentage by mass: 0.90-1.20% of C, 0.20-1.20% of Si, 0.20-1.00% of Mn, 6.00-12.00% of Cr, 2.00-5.00% of Mo, 1.00-4.00% of V, 0.80-2.00% of W, not greater than 0.80% of Ni, not greater than 0.02% of P, not greater than 0.02% of S, and the balance of Fe and inevitable impurities. The manufacturing method for the cold roll comprises the process steps of steel ingot refining, billet forging, pre-heat treatment, machining, final heat treatment and the like. The surface layer hardness of a roll body of the cold roll manufactured by the manufacturing method disclosed by the invention is 88-98 HSD; the cold roll is excellent in wear resistance, high in roughness holding capacity and high in structure stability. According to the manufacturing process disclosed by the invention, chroming process steps are reduced and production cost is decreased.
Description
Technical field
The present invention relates to a kind of cold roll and manufacture method thereof, specifically a kind of forging high speed steel cold roller and manufacture method thereof.
Background technology
Roll, as the important tool of steel rolling industry, is the main consumable part of steel rolling equipment.Cold roll is that a kind of mode of extruding of passing through under cold conditions is by the working part of metal machine-shaping.Cold roll will bear very large rolling stress in the course of the work, add rolled piece weld seam, be mingled with, the problem such as limit is split, its working conditions is severe, easily causes moment high temperature, make cold roll be subject to strong thermal shocking, easily cause crackle, roll banding, peel off even and scrap.Suffered stress is very big in the course of the work due to cold roll, and the failure modes such as piece, wearing and tearing are peeled off, fallen to normal generation the in cold roll surface, therefore requires its surface to possess quite high hardness, wear resistance and splitting resistance.Cold roll not only will have the cracking caused because of stress in bending, torsional stress and shear-stress and the ability of peeling off of resisting in a word, also high wear resistance, contact fatigue strength, fracture toughness property and thermal shock strength etc. will be arranged simultaneously.
The material that is used for manufacturing cold roll outside Present Domestic on market is mainly Cr2, Cr3 and Cr5 series, and Cr2 series is mostly for small-sized cold-rolling mill and the poor reversable cold-rolling machine of part equipment; Cr3 series cold roll is mostly for reversable cold-rolling machine and part Large Scale Cold milling train; Cr5 series is the main flow material of Chinese forging steel cold roll at present, basic Cr5 series working roll and the intermediate roll of all adopting of the Reversible Single Stand Cold Rolling Mill that most of cold-rolling mills and strip quality are had relatively high expectations.
Along with the high speed development of the industries such as automobile, household electrical appliances, electronics, the specification of quality of cold rolled sheet and siliconized plate is being improved constantly, also more and more higher to the specification of quality of cold roll.And the cold roll of above-mentioned chromium steel series working roll often occurs and is rolled between material skidding in the operation of rolling when rolled sheet metal or siliconized plate; At working roll, be used in the near future, many work roll surface roughness sharply reduce, directly surface quality and the conforming product rate of influence of rolled sheet material.These situations be all due to the wearing no resistance of working roll, the surfaceness hold facility is poor causes.Conventional high-carbon chromium steel cold roll is due to the restriction that is subjected to material self, when possessing than high-wearing feature, be difficult to have good anti-accident ability, therefore under the environment for use that cold rolled silicon steel etc. is had relatively high expectations to the cold roll over-all properties, the limitation of conventional high-carbon chromium steel cold roll material also just highlights.At present these problems are generally carried out texturing and chromium plating solves by frequent replacing working roll or to working roll, but these methods not only can reduce the cold-rolling mill operating rate, affect production schedule; And the working roll texturing and chromium plating expensive, increased production cost, also can cause environmental pollution simultaneously.
Along with improving constantly that the over-all propertieies such as cold roll wear resistance, anti-accident performance are required, for obtaining higher Integrated using performance, improve Cold Work Roll Material alloying level, making the higher cold roll of alloying level has become the developing direction of cold rolled sheet with roller, and forging rapid steel, semi-high speed steel cold roller become the recent development direction of cold roll material.In recent years, forge high speed steel cold roller and be used widely, for cold strip mill.
Forge high speed steel cold roller dense structure, intensity is high, anisotropy good, and the form of carbide, distribution obviously are better than the casting high speed steel cold roll after forging.But forge high speed steel cold roller material cost, production cost and production difficulty all apparently higher than the casting high speed steel cold roll.Therefore it is limited to forge rapid steel purposes in cold roll is produced, can only be for the manufacture of small-sized cold roll.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of large-sized forging high speed steel cold roller and manufacture method thereof, and this cold roll has high-wearing feature, high roughness retaining capability and high structure stability.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
The large-sized forging high speed steel cold roller, chemical composition in described cold roll and quality percentage composition thereof are: C0.90～1.20%, Si0.20～1.20%, Mn0.20～1.00%, Cr6.00～12.00%, Mo2.00～5.00%, V1.00～4.00%, W0.80～2.00%, Ni≤0.80%, P≤0.02%, S≤0.02%, all the other are Fe and inevitable impurity.
Further improvement of the present invention is: the making method of described cold roll comprises following processing step:
A, refining steel ingot: raw material is carried out to preliminary melting in electric arc furnace, after melting completes, molten steel be placed in to the LF refining furnace to liquid steel refining and carry out vacuum stripping,
After liquid steel refining completes, be molded into the electrode ingot, utilize afterwards electro-slag re-melting method to make the ESR electroslag ingot;
B, forging steel billet: the electroslag ingot that steps A makes is made to roller stock through heating, insulation, jumping-up and pulling;
C, conditioning heat treatment: roller stock is carried out to conditioning heat treatment: first be heated to quenching after 1030 ℃ of insulations; Reheat to air cooling after 820 ℃ of insulations, finally carry out temper, tempering temperature is 650 ℃;
D, machining and final thermal treatment: roller stock is carried out to roughing, after UT (Ultrasonic Testing) is up to the standards, continuous induction hardening is carried out on body of roll top layer to roller stock, quenching temperature is 1100～1180 ℃, afterwards roller stock is carried out to temper: tempering temperature is to 450～550 ℃, and after insulation 30h, air cooling is to room temperature;
After tempering completes, by desired size, roller stock is carried out to precision work, make cold roll, carry out ultrasound examination, hardness test and microstructure examination.
Improvement of the present invention also is: the tempering that described step D carries out is carried out three times altogether, and total soaking time of three tempering is 80h.
Owing to having adopted technique scheme, the technical progress that the present invention obtains is:
In the present invention, in the chemical composition of steel, Cr has increased the hardening capacity of steel, has improved the hardness of steel and wear resistance and steel is become fragile; Mo has improved hardening capacity and the heat resistance of steel, prevents temper brittleness, keeps the hardness of steel stable, has increased the drag of steel to distortion, cracking and wearing and tearing etc.The content of the carbide forming elements such as Cr of the present invention, Mo, V, W is higher, the larger liquation carbide Cr of formation
7C
3Wear resistance and the high roughness retaining capability of cold roll excellence have been given, the high rigidity carbide Mo that small and dispersed distributes
2C, VC, WC, having given the cold roll matrix obtains high rigidity and has high structure stability under high tempering, guaranteed that the large-sized forging high speed steel cold roller has excellent wear resistance, high roughness retaining capability, thereby can make cold roll not need to carry out chromium plating just can be directly used in the rolling of high-grade sheet material, in the working process of cold roll, thermal shock resistance obviously is better than conventional cold roll.
The cold roll that adopts material of the present invention to make, the body of roll surface hardness of its cold roll is 88～96HSD, has excellent wear resistance, high roughness retaining capability and high structure stability.On the higher milling train of casualty ratio of accidents, apply, cold roll Integrated using performance obviously improves; Cold roll has excellent abrasion resistance properties, applies on continuous mill after-frame and levelling machine, has reduced the processing step of chromium plating, greatly reduces production cost, has also removed the environmental pollution that chromium plating causes from.
Electro-slag re-melting method of the present invention is evenly directed consecutive solidification mode, has avoided the steel ingot center to solidify not good, has improved ingot quality.Heat treating method has guaranteed the performance of cold roll, and it quenches, the temperature and time of tempering, makes cold roll have optimal mechanical properties and use properties.
Embodiment
The large-sized forging high speed steel cold roller, its chemical composition and quality percentage composition thereof are: C0.90～1.20%, Si0.20～1.20%, Mn0.20～1.00%, Cr6.00～12.00%, Mo2.00～5.00%, V1.00～4.00%, W0.80～2.00%, Ni≤0.80%, P≤0.02%, S≤0.02%, all the other are Fe and inevitable impurity.
Above-mentioned chemical composition and quality percentage composition thereof can be more preferably: C0.90～1.10%, Si0.60～1.00%, Mn0.60～1.00%, Cr8.00～11.00%, Mo3.00～4.00%, V2.50～3.00%, W1.00～1.50%, Ni≤0.80%, P≤0.02%, S≤0.02%.All the other are Fe and inevitable impurity.
Below in conjunction with specific embodiment, the present invention is described in further details:
Embodiment 1
Forge high speed steel cold roller and manufacture method thereof, chemical composition in described cold roll and quality percentage composition design objective thereof are: C0.9～1.0%, Si0.8～0.9%, Mn0.8～0.9%, Cr9.8～10.0%, Mo3.8～4.0%, V2.8～3.0%, W1.4～1.5%, Ni0.5～0.6%, P≤0.02%, S≤0.02%, all the other are Fe and inevitable impurity.
The making method of described cold roll comprises following processing step:
A, refining steel ingot: desired raw material is tentatively smelted in electric arc furnace, afterwards molten steel is placed in to the LF refining furnace, start molten steel is carried out to refining: the LF refining temperature is 1600～1800 ℃, under the vacuum tightness of 0～67Pa, keeps 15～25min to carry out vacuum stripping.After liquid steel refining, pour into a mould, be molded into the electrode ingot.
By the electrode ingot be heated to 720 ℃ carry out isothermal annealing after, the electrode ingot is carried out to esr and make the ESR electroslag ingot: consumable electrode and electrode ingot all are immersed in the slag bath of junker mold, pass into electric current, electric current is fused into molten metal by electrode heating by the electrode ingot, and the bottom that the molten metal after fusing arrives junker mold is frozen into new steel ingot gradually.Again the steel ingot be frozen into is the ESR electroslag ingot finally obtained.
Electroslag ingot is carried out to the chemical composition analysis, and the chemical composition and the quality percentage composition thereof that obtain electroslag ingot are: C1.0%, Si0.8%, Mn0.8%, Cr10.0%, Mo4.0%, V3.0%, W1.5%, Ni0.6%, P0.02%, S0.02%, all the other are Fe and inevitable impurity.
B, forge steel billet: after the electroslag ingot that steps A is obtained carries out 1200 ℃ of heat tracings, come out of the stove.By after pressing tongs handle, jumping-up, a series of forging process of pulling, making roller stock.
C, conditioning heat treatment: roller stock is carried out to conditioning heat treatment: first be heated to quenching after 1030 ℃ of insulations; Reheat to air cooling after 820 ℃ of insulations, finally carry out temper, tempering temperature is 650 ℃.
D, machining and final thermal treatment: roller stock size is as requested first carried out to mechanical roughing, after by UT (Ultrasonic Testing), being up to the standards, utilize the double frequency induction lathe to carry out continuous induction hardening to the body of roll top layer of roller stock, quenching temperature is 1100～1180 ℃.
After quenching completes, roller stock is carried out to temper: roller stock is heated to 450～550 ℃, and after insulation 30h, air cooling is to room temperature.Temper need to repeat three times, and three times tempering insulation time is total to 80h.
After tempering completes, roller stock is required to carry out precision work according to delivery gauge, make the cold roll of final requirement.Afterwards cold roll is carried out to ultrasound examination, hardness test, microstructure examination.
The body of roll top layer Shore hardness that obtains cold roll through last test is 90～96HSD, and ultrasound examination and metallographic structure all reach requirement.
Embodiment 2～embodiment 5
In embodiment 2, processing step is identical with the processing step in embodiment 1, and with the difference of embodiment 1, be: in the present embodiment, the design objective of the chemical composition of cold roll and quality percentage composition thereof is:
C0.9～1.0%, Si0.8～0.9%, Mn0.8～0.9%, Cr9.8～10.0%, Mo3.8～4.0%, V2.8～3.0%, W1.4～1.5%, Ni0.5～0.6%, P≤0.015%, S≤0.015%, all the other are Fe and inevitable impurity.
Through electroslag ingot is carried out to the chemical composition analysis, in electroslag ingot, chemical composition and quality percentage composition thereof are: C1.1%, Si0.6%, Mn0.6%, Cr11.0%, Mo3.0%, V1.0%, W0.8%, Ni0.3%, P0.014%, S0.003%, all the other are Fe and inevitable impurity.
Quenching temperature in step D is 1050 ℃; Tempering temperature is 450 ℃.
The body of roll top layer Shore hardness that obtains cold roll after final production completes is 88～92HSD, and ultrasound examination and metallographic structure all reach requirement.
Embodiment 3
In embodiment 3, processing step is identical with the processing step in embodiment 1, and with the difference of embodiment 1, be: in the present embodiment, the design objective of the chemical composition of cold roll and quality percentage composition thereof is:
C0.9～1.0%, Si0.9～1.0%, Mn0.4～0.5%, Cr11.5～12.0%, Mo1.8～2.0%, V3.8～4.0%, W0.9～1.0%, Ni0.35～0.45%, P≤0.01%, S≤0.01%, all the other are Fe and inevitable impurity.
Through electroslag ingot is carried out to the chemical composition analysis, in electroslag ingot, chemical composition and quality percentage composition thereof are: C0.9%, Si1.0%, Mn0.4%, Cr12.0%, Mo2.0%, V4.0%, W1.0%, Ni0.4%, P0.01%, S0.009%, all the other are Fe and inevitable impurity.
Quenching temperature in step D is 1050 ℃; Tempering temperature is 450 ℃.
The body of roll top layer Shore hardness that obtains cold roll after final production completes is 90～93HSD, and ultrasound examination and metallographic structure all reach requirement.
Embodiment 4
In embodiment 4, processing step is identical with the processing step in embodiment 1, and with the difference of embodiment 1, be: in the present embodiment, the design objective of the chemical composition of cold roll and quality percentage composition thereof is:
C1.1～1.2%, Si1.1～1.2%, Mn0.2～0.3%, Cr7.5～8.0%, Mo4.8～5.0%, V2.5～3.0%, W1.1～1.2%, Ni0.05～0.15%, P≤0.02%, S≤0.018%, all the other are Fe and inevitable impurity.
Through electroslag ingot is carried out to the chemical composition analysis, in electroslag ingot, chemical composition and quality percentage composition thereof are: C1.2%, Si1.2%, Mn0.2%, Cr8.0%, Mo5.0%, V2.8%, W1.2%, Ni0.1%, P0.018%, S0.015%, all the other are Fe and inevitable impurity.
Quenching temperature in step D is 1100 ℃; Tempering temperature is 500 ℃.
The body of roll top layer Shore hardness that obtains cold roll after final production completes is 92～98HSD, and ultrasound examination and metallographic structure all reach requirement.
Embodiment 5
In embodiment 5, processing step is identical with the processing step in embodiment 1, and with the difference of embodiment 1, be: in the present embodiment, the design objective of the chemical composition of cold roll and quality percentage composition thereof is:
C1.0～1.1%, Si0.2～0.3%, Mn0.9～1.0%, Cr8.5～9.0%, Mo3.5～4.0%, V2.0～2.5%, W2.0～2.5%, Ni0.7～0.8%, P≤0.015%, S≤0.01%, all the other are Fe and inevitable impurity.
Through electroslag ingot is carried out to the chemical composition analysis, in electroslag ingot, chemical composition and quality percentage composition thereof are: C1.05%, Si0.2%, Mn1.0%, Cr9.0%, Mo3.5%, V2.5%, W2.0%, Ni0.8%, P0.013%, S0.008%, all the other are Fe and inevitable impurity.
Quenching temperature in step D is 1150 ℃; Tempering temperature is 540 ℃.
The body of roll top layer Shore hardness that obtains cold roll after final production completes is 92～96HSD, and ultrasound examination and metallographic structure all reach requirement.
With conventional cold roll, compare, in the course of the work, thermal shock resistance is good for the cold roll that use the present invention produces, and extend the work-ing life of cold roll, need not frequently change cold roll again, accelerated production schedule.
Claims (3)
1. large-sized forging high speed steel cold roller, it is characterized in that chemical composition and quality percentage composition thereof in described cold roll are: C0.90～1.20%, Si0.20～1.20%, Mn0.20～1.00%, Cr6.00～12.00%, Mo2.00～5.00%, V1.00～4.00%, W0.80～2.00%, Ni≤0.80%, P≤0.02%, S≤0.02%, all the other are Fe and inevitable impurity.
2. the manufacture method of large-sized forging high speed steel cold roller claimed in claim 1, it is characterized in that: the making method of described cold roll comprises following processing step:
A, refining steel ingot: raw material is carried out to preliminary melting in electric arc furnace, after melting completes, molten steel be placed in to the LF refining furnace to liquid steel refining and carry out vacuum stripping,
After liquid steel refining completes, be molded into the electrode ingot, utilize afterwards electro-slag re-melting method to make the ESR electroslag ingot;
B, forging steel billet: the electroslag ingot that steps A makes is made to roller stock through heating, insulation, jumping-up and pulling;
C, conditioning heat treatment: roller stock is carried out to conditioning heat treatment: first be heated to quenching after 1030 ℃ of insulations; Reheat to air cooling after 820 ℃ of insulations, finally carry out temper, tempering temperature is 650 ℃;
D, machining and final thermal treatment: roller stock is carried out to roughing, after UT (Ultrasonic Testing) is up to the standards, continuous induction hardening is carried out on body of roll top layer to roller stock, quenching temperature is 1100～1180 ℃, afterwards roller stock is carried out to temper: tempering temperature is to 450～550 ℃, and after insulation 30h, air cooling is to room temperature;
After tempering completes, by desired size, roller stock is carried out to precision work, make cold roll, carry out ultrasound examination, hardness test and microstructure examination.
3. the manufacture method of large-sized forging high speed steel cold roller according to claim 2, it is characterized in that: the tempering that described step D carries out is carried out three times altogether, and total soaking time of three tempering is 80h.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104384193A (en) * | 2014-10-16 | 2015-03-04 | 中钢集团邢台机械轧辊有限公司 | High speed steel finishing roll of wire bar mill and manufacturing method of high speed steel finishing roll |
| CN105624565A (en) * | 2016-01-05 | 2016-06-01 | 中钢集团邢台机械轧辊有限公司 | Chrome-plating-free cold roll and producing method thereof |
| CN106350641A (en) * | 2016-08-31 | 2017-01-25 | 抚州申铃汽车配件有限责任公司 | Heat treatment method for improving service life of cold-working mold |
| CN106435370A (en) * | 2016-10-13 | 2017-02-22 | 宝钢轧辊科技有限责任公司 | High-speed steel roller special for cold-rolled high-strength car plate and manufacturing method thereof |
| CN106756620A (en) * | 2016-11-30 | 2017-05-31 | 马鞍山市恒强合金科技有限公司 | A kind of non-ferrous metal calendering cold roll and preparation method thereof |
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| CN106884118A (en) * | 2016-12-29 | 2017-06-23 | 中钢集团邢台机械轧辊有限公司 | Forging Electroslag Cladding high-speed steel roll and its manufacture method |
| CN107502713A (en) * | 2017-08-28 | 2017-12-22 | 大连冶金工具厂有限公司 | A kind of ratio-frequency welded tube unit roller processing technology |
| CN107686942A (en) * | 2017-08-21 | 2018-02-13 | 宜兴市永昌轧辊有限公司 | A kind of cold roll for possessing high roughness retention property |
| CN110484852A (en) * | 2019-08-02 | 2019-11-22 | 史继明 | A kind of hot-spraying technique of grain and oil machinery flour mill tungsten carbide grinding roller |
| CN113201696A (en) * | 2021-05-11 | 2021-08-03 | 江阴市瑞华机械制造有限公司 | TiN-rich iron alloy and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179368A (en) * | 1997-02-24 | 1998-04-22 | 冶金工业部钢铁研究总院 | Centrifugal casting method for producing composite high-speed steel rollers |
| JPH11246949A (en) * | 1998-03-03 | 1999-09-14 | Hitachi Metals Ltd | High speed steel series sintered alloy excellent in cracking resistance and roll for rolling using it |
| CN101880834A (en) * | 2010-07-27 | 2010-11-10 | 中钢集团邢台机械轧辊有限公司 | Cold roll with high abrasive resistance and high roughness retaining capability and manufacturing method thereof |
-
2013
- 2013-07-10 CN CN201310290009.6A patent/CN103409688B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1179368A (en) * | 1997-02-24 | 1998-04-22 | 冶金工业部钢铁研究总院 | Centrifugal casting method for producing composite high-speed steel rollers |
| JPH11246949A (en) * | 1998-03-03 | 1999-09-14 | Hitachi Metals Ltd | High speed steel series sintered alloy excellent in cracking resistance and roll for rolling using it |
| CN101880834A (en) * | 2010-07-27 | 2010-11-10 | 中钢集团邢台机械轧辊有限公司 | Cold roll with high abrasive resistance and high roughness retaining capability and manufacturing method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384193A (en) * | 2014-10-16 | 2015-03-04 | 中钢集团邢台机械轧辊有限公司 | High speed steel finishing roll of wire bar mill and manufacturing method of high speed steel finishing roll |
| CN105624565A (en) * | 2016-01-05 | 2016-06-01 | 中钢集团邢台机械轧辊有限公司 | Chrome-plating-free cold roll and producing method thereof |
| CN106350641A (en) * | 2016-08-31 | 2017-01-25 | 抚州申铃汽车配件有限责任公司 | Heat treatment method for improving service life of cold-working mold |
| CN106435370A (en) * | 2016-10-13 | 2017-02-22 | 宝钢轧辊科技有限责任公司 | High-speed steel roller special for cold-rolled high-strength car plate and manufacturing method thereof |
| CN106435370B (en) * | 2016-10-13 | 2018-12-04 | 宝钢轧辊科技有限责任公司 | Cold rolling high strength car sheet specialized high-speed steel roll and its manufacturing method |
| CN106756620B (en) * | 2016-11-30 | 2018-05-11 | 马鞍山市恒强合金科技有限公司 | A kind of non-ferrous metal calendering cold roll and preparation method thereof |
| CN106756620A (en) * | 2016-11-30 | 2017-05-31 | 马鞍山市恒强合金科技有限公司 | A kind of non-ferrous metal calendering cold roll and preparation method thereof |
| CN106884118A (en) * | 2016-12-29 | 2017-06-23 | 中钢集团邢台机械轧辊有限公司 | Forging Electroslag Cladding high-speed steel roll and its manufacture method |
| CN106834969A (en) * | 2016-12-29 | 2017-06-13 | 中钢集团邢台机械轧辊有限公司 | Jobbing sheet-rolling mill working roll and its manufacture method |
| CN106834969B (en) * | 2016-12-29 | 2019-09-24 | 中钢集团邢台机械轧辊有限公司 | Jobbing sheet-rolling mill working roll and its manufacturing method |
| CN107686942A (en) * | 2017-08-21 | 2018-02-13 | 宜兴市永昌轧辊有限公司 | A kind of cold roll for possessing high roughness retention property |
| CN107502713A (en) * | 2017-08-28 | 2017-12-22 | 大连冶金工具厂有限公司 | A kind of ratio-frequency welded tube unit roller processing technology |
| CN110484852A (en) * | 2019-08-02 | 2019-11-22 | 史继明 | A kind of hot-spraying technique of grain and oil machinery flour mill tungsten carbide grinding roller |
| CN113201696A (en) * | 2021-05-11 | 2021-08-03 | 江阴市瑞华机械制造有限公司 | TiN-rich iron alloy and preparation method thereof |
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| CN103409688B (en) | 2015-07-15 |
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