CN104313482A - Manufacturing method of wear-resistant hopper - Google Patents

Manufacturing method of wear-resistant hopper Download PDF

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Publication number
CN104313482A
CN104313482A CN201410490951.1A CN201410490951A CN104313482A CN 104313482 A CN104313482 A CN 104313482A CN 201410490951 A CN201410490951 A CN 201410490951A CN 104313482 A CN104313482 A CN 104313482A
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CN
China
Prior art keywords
hopper
carburizing
wear
blank
vacuum
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.)
Pending
Application number
CN201410490951.1A
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Chinese (zh)
Inventor
钱根来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Yichen Mould Technology Co Ltd
Original Assignee
Wuxi Yichen Mould Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Yichen Mould Technology Co Ltd filed Critical Wuxi Yichen Mould Technology Co Ltd
Priority to CN201410490951.1A priority Critical patent/CN104313482A/en
Publication of CN104313482A publication Critical patent/CN104313482A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20Carburising
    • C23C8/22Carburising of ferrous surfaces

Abstract

The invention discloses a manufacturing method of a wear-resistant hopper, and belongs to the machinery manufacturing technical field. The manufacturing method comprises the processing steps: (1) hopper material preparation; (2) workblank forging; (3) forged workblank initial processing; (4) hopper deep processing; (5) hopper cleaning; (6) hopper temperature rising and uniform heating; (7) a carburizing period of hopper vacuum carburizing; (8) a diffusion stage of hopper vacuum carburizing; and (9) heat treatment after hopper vacuum carburizing. The manufacturing method solves the problems that a conventional hopper is easy to wear and short in service life due to poor wear resistance, and has the advantages of simple method, low cost, and easy processing.

Description

A kind of manufacture method of wear-resisting hopper
Technical field
The invention belongs to machinery manufacturing technology field, more particularly, relate to a kind of manufacture method holding the hopper of rock, metal works etc.
Background technology
For the rock excavated, in fact executing in the course of processing, usually using hopper as its intermediate transition parts, and be also like this for the processing of metal works in the factory.But due to rock and metal works hardness higher, and frequent operation, causes the collision frequency of hopper higher, if things go on like this causes the wearing and tearing of hopper.Therefore for the design of hopper, its material should possess certain antiwear characteristic.Existing hopper design, because its wear resistance is lower, cause hopper easy to wear, work-ing life is low.
Summary of the invention
For easy to wear, problem that work-ing life is low that existing hopper causes because wearing no resistance, the invention provides a kind of manufacture method of wear-resisting hopper, it is by changing the blank component of hopper, and by vacuum carburization technology, its surface is strengthened, to improve its wear resistance, and then improve its result of use, improve its work-ing life.
For solving the problem, the present invention adopts following technical scheme.
A manufacture method for wear-resisting hopper, comprises the following steps:
(1) preparation of hopper material:
The mass percent of hopper blank component is: C:0.35-0.55%, Mn:0.30-0.50 %, Si:0.15-0.25 %, S:0.01-0.02%, P :≤0.03%, Cr :≤0.10%, Ni :≤0.10%, Cu :≤0.10%, and surplus is Fe;
(2) forging of blank:
Blank is placed in Medium Frequency Induction Heating Furnace and is heated to initial forging temperature, then the blank of heating is put into milling train and utilize rolling mold to roll into hopper blank;
(3) preliminary working of rough forging:
After being annealed by rough forging, lathe carries out the preliminary working of hopper;
(4) deep processing of hopper:
Hopper after Quench and temper is first removed superficial oxidation layer, and carry out precision work on lathe;
(5) cleaning of hopper:
By workpiece cleaning, and put into vacuum cementation furnace;
(6) intensification of hopper and soaking:
Heating up starting after vacuum carburizing stove evacuation to 65Pa, being heated to 930-940 DEG C, being incubated 5 minutes;
(7) carburizing cycle of hopper vacuum carburization:
Carburizing agent adopts methane, and purity is greater than 97%, and carburetted gas flow is make the gathering way as 30Pa/s, until stove internal gas pressure is 1.32-2.15 × 10 of furnace pressure 4pa, carburizing time is 230-255 minute;
(8) diffusion period of hopper vacuum carburization:
The vacuum tightness of diffusion period is 13-20Pa, and diffusion time is 170-195 minute;
(9) thermal treatment after hopper vacuum carburization:
After carburizing completes, part is cooled to 760-790 DEG C in stove, and is cooled fast by liquid nitrogen, then comes out of the stove, and is incubated 3 hours thereafter at-70--90 DEG C of temperature, carries out the 150-170 DEG C of insulation temper of 3 hours after deepfreeze.
Preferably, in described step (1), the mass percent of hopper blank component is: C:0.45%, Mn:0.40 %, Si:0.20 %, S:0.01%, P :≤0.03%, Cr :≤0.10%, Ni :≤0.10%, Cu :≤0.10%, surplus is Fe.
Preferably, in described step (7), stove internal gas pressure is 2.00 × 10 4pa, carburizing time is 240 minutes. 
Preferably, in described step (8), the vacuum tightness of diffusion period is 15Pa, and diffusion time is 190 minutes.
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention is by changing the blank component of hopper, and by vacuum carburization technology, strengthens, improve its wear resistance to its surface, and then improves its result of use, improves its work-ing life.
(2) the inventive method is simple, and cost is low, handling ease.
Embodiment
Describe the present invention below in conjunction with embodiment.
embodiment 1
A manufacture method for wear-resisting hopper, comprises the following steps:
(1) preparation of hopper material:
The mass percent of hopper blank component is: C:0.45%, Mn:0.40 %, Si:0.20 %, S:0.01%, P :≤0.03%, Cr :≤0.10%, Ni :≤0.10%, Cu :≤0.10%, and surplus is Fe;
(2) forging of blank:
Blank is placed in Medium Frequency Induction Heating Furnace and is heated to initial forging temperature, then the blank of heating is put into milling train and utilize rolling mold to roll into hopper blank;
(3) preliminary working of rough forging:
After being annealed by rough forging, lathe carries out the preliminary working of hopper;
(4) deep processing of hopper:
Hopper after Quench and temper is first removed superficial oxidation layer, and carry out precision work on lathe;
(5) cleaning of hopper:
By workpiece cleaning, and put into vacuum cementation furnace;
(6) intensification of hopper and soaking:
Heating up starting after vacuum carburizing stove evacuation to 65Pa, being heated to 930-940 DEG C, being incubated 5 minutes;
(7) carburizing cycle of hopper vacuum carburization:
Carburizing agent adopts methane, and purity is greater than 97%, and carburetted gas flow is make the gathering way as 30Pa/s, until stove internal gas pressure is 2.00 × 10 of furnace pressure 4pa, carburizing time is 240 minutes;
(8) diffusion period of hopper vacuum carburization:
The vacuum tightness of diffusion period is 15Pa, and diffusion time is 190 minutes;
(9) thermal treatment after hopper vacuum carburization:
After carburizing completes, part is cooled to 760-790 DEG C in stove, and is cooled fast by liquid nitrogen, then comes out of the stove, and is incubated 3 hours thereafter at-70--90 DEG C of temperature, carries out the 150-170 DEG C of insulation temper of 3 hours after deepfreeze.

Claims (4)

1. a manufacture method for wear-resisting hopper, is characterized in that following steps:
(1) preparation of hopper material:
The mass percent of hopper blank component is: C:0.35-0.55%, Mn:0.30-0.50 %, Si:0.15-0.25 %, S:0.01-0.02%, P :≤0.03%, Cr :≤0.10%, Ni :≤0.10%, Cu :≤0.10%, and surplus is Fe;
(2) forging of blank:
Blank is placed in Medium Frequency Induction Heating Furnace and is heated to initial forging temperature, then the blank of heating is put into milling train and utilize rolling mold to roll into hopper blank;
(3) preliminary working of rough forging:
After being annealed by rough forging, lathe carries out the preliminary working of hopper;
(4) deep processing of hopper:
Hopper after Quench and temper is first removed superficial oxidation layer, and carry out precision work on lathe;
(5) cleaning of hopper:
By workpiece cleaning, and put into vacuum cementation furnace;
(6) intensification of hopper and soaking:
Heating up starting after vacuum carburizing stove evacuation to 65Pa, being heated to 930-940 DEG C, being incubated 5 minutes;
(7) carburizing cycle of hopper vacuum carburization:
Carburizing agent adopts methane, and purity is greater than 97%, and carburetted gas flow is make the gathering way as 30Pa/s, until stove internal gas pressure is 1.32-2.15 × 10 of furnace pressure 4pa, carburizing time is 230-255 minute;
(8) diffusion period of hopper vacuum carburization:
The vacuum tightness of diffusion period is 13-20Pa, and diffusion time is 170-195 minute;
(9) thermal treatment after hopper vacuum carburization:
After carburizing completes, part is cooled to 760-790 DEG C in stove, and is cooled fast by liquid nitrogen, then comes out of the stove, and is incubated 3 hours thereafter at-70--90 DEG C of temperature, carries out the 150-170 DEG C of insulation temper of 3 hours after deepfreeze.
2. the manufacture method of a kind of wear-resisting hopper according to claim 1, it is characterized in that, in described step (1), the mass percent of hopper blank component is: C:0.45%, Mn:0.40 %, Si:0.20 %, S:0.01%, P :≤0.03%, Cr :≤0.10%, Ni :≤0.10%, Cu :≤0.10%, surplus is Fe.
3. the manufacture method of a kind of wear-resisting hopper according to claim 1, is characterized in that, in described step (7), stove internal gas pressure is 2.00 × 10 4pa, carburizing time is 240 minutes.
4. the manufacture method of a kind of wear-resisting hopper according to claim 1, is characterized in that, in described step (8), the vacuum tightness of diffusion period is 15Pa, and diffusion time is 190 minutes.
CN201410490951.1A 2014-09-24 2014-09-24 Manufacturing method of wear-resistant hopper Pending CN104313482A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107740032A (en) * 2017-09-22 2018-02-27 成都万可瑞特金属科技有限公司 The super shallow carburization heat treatment method of vacuum low-pressure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010265533A (en) * 2009-05-18 2010-11-25 Nippon Steel Corp Heating controller and heating control method
CN102154652A (en) * 2011-03-11 2011-08-17 江苏南方轴承股份有限公司 Medium-deep-layer carburization or carbonitriding thermal processing technology for bearings or clutch parts
CN102581145A (en) * 2012-03-23 2012-07-18 马鞍山市国菱机械刃模有限公司 Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die
CN102796964A (en) * 2011-10-10 2012-11-28 江苏力博士机械股份有限公司 Novel material of piston of breaking hammer and manufacturing process of piston

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010265533A (en) * 2009-05-18 2010-11-25 Nippon Steel Corp Heating controller and heating control method
CN102154652A (en) * 2011-03-11 2011-08-17 江苏南方轴承股份有限公司 Medium-deep-layer carburization or carbonitriding thermal processing technology for bearings or clutch parts
CN102796964A (en) * 2011-10-10 2012-11-28 江苏力博士机械股份有限公司 Novel material of piston of breaking hammer and manufacturing process of piston
CN102581145A (en) * 2012-03-23 2012-07-18 马鞍山市国菱机械刃模有限公司 Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107740032A (en) * 2017-09-22 2018-02-27 成都万可瑞特金属科技有限公司 The super shallow carburization heat treatment method of vacuum low-pressure

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Address after: 241007 Anhui city of Wuhu Province Economic and Technological Development Zone No. 35 Hengshan Road electronic business park room 605-606

Applicant after: Wuxi Yichen Mould Technology Co., Ltd.

Address before: 241007 Anhui Province, Wuhu City Jiujiang District Wanli Street Bay Industrial Park No. 2 building

Applicant before: Wuxi Yichen Mould Technology Co., Ltd.

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Application publication date: 20150128

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