CN106435581A - Steel part surface ultra-hardening treatment process - Google Patents

Steel part surface ultra-hardening treatment process Download PDF

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Publication number
CN106435581A
CN106435581A CN201611064320.9A CN201611064320A CN106435581A CN 106435581 A CN106435581 A CN 106435581A CN 201611064320 A CN201611064320 A CN 201611064320A CN 106435581 A CN106435581 A CN 106435581A
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powder
powder body
coating material
mixed
composite coating
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CN201611064320.9A
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Chinese (zh)
Inventor
刘淑杰
李海旭
孙庆浩
田绍洁
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DDA SHENGJIE VACUUM TECHNIQUES DEVELOP Co Ltd
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DDA SHENGJIE VACUUM TECHNIQUES DEVELOP Co Ltd
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Priority to CN201611064320.9A priority Critical patent/CN106435581A/en
Publication of CN106435581A publication Critical patent/CN106435581A/en
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    • 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
    • C23C24/00Coating starting from inorganic powder
    • C23C24/08Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • B22F1/0003
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14Treatment of metallic powder
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/067Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide

Abstract

The invention relates to a steel part surface ultra-hardening treatment process and belongs to the field of metal material surface treatment. A vacuum cladding method is adopted for cladding an iron-base alloy with a WC composite coating. The steel part surface ultra-hardening treatment process comprises the steps that firstly, coating of the composite coating is prepared, and powder materials which are good in dispersity, uniform in particle diameter and high in strength and abrasion resistance are formed in advance; and then the surface of the steel part is cladded with the obtained spherical materials through the vacuum cladding method, and the steel part with the high surface hardness is obtained.

Description

The superhard surface treatment technology of steel part
Technical field
The present invention relates to a kind of superhard surface treatment technology of steel part, belong to field of metal material surface treatment.
Background technology
Surface hardening refer to make the case-hardening of part by suitable method and the center portion of part still have tough The process of property.Conventional surface-hardening treatment method mainly has carburizing, nitridation, hard anodizing, coating, surface hardening, oozes Metal etc..
By plating one layer of metal with higher hardness or inorganic matters in piece surface, can reach and improve case hardness Method, such as chromium plating.Chromium coating has very high hardness, different with process conditions according to solution composition, and its hardness can be in very big model Enclose change in 400~1200HV.Chromium coating has preferable thermostability and good wearability.With the development of materialogy, applying Increase hard ceramic in layer increasingly to receive publicity with the hardness improving alloy part surface further, wherein, most commonly seen Coating material be WC.
The WC powder body property of itself, such as granularity, dispersibility etc. all determines the performance of coating.And domestic at present WC powder used Depending on import body more, relatively costly.
Content of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of superhard surface treatment technology of steel part, specifically For a kind of technique of utilization vacuum cladding method cladding WC composite coating on steel part.
The superhard surface treatment technology of steel part, described technique is that on ferrous alloy, cladding WC is combined using vacuum cladding method The technique of coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2~0.4: 0.1~0.3:0.08~0.2 ratio mixing, mixed powder is placed in ball mill, in the speed of 300~360r/min Ball milling at least 2h, ball-milling medium is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out ball Change is processed, and actual conditions is:Power 40~60kW, speed of dusting is 75~150g/min, the flow velocity of carrier gas argon is 25~ 60L/min, obtains spherical composite coating material;
(2) spray treatment:After spherical for step (1) gained composite coating material is dried with nanometer Fe powder body it is in mass ratio 1:0.5~1.2 is mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, Sintering condition is:1200~1350 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 5~30min.
Induction plasma powder unit of the present invention and vacuum drying oven are all commercially available.
Further, the spherical composite coating material of described step (1) gained is spheroidal particle, and mean diameter is 25~60 micro- Rice.
Further, WC powder body described in described step (1), TiC powder, ZrC powder body, the gross weight of Co powder body with anhydrous The ratio of ethanol is 1g:0.2~5mL.
The preferred technical scheme of the present invention one is:
The superhard surface treatment technology of steel part, described technique is that on ferrous alloy, cladding WC is combined using vacuum cladding method The technique of coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2:0.25: 0.08 ratio mixing, mixed powder is placed in ball mill, the speed in 300~360r/min is milled to few 2h, ball Grinding media is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out spheroidising, concrete bar Part is:Power 60kW, speed of dusting is 100g/min, and the flow velocity of carrier gas argon is 35L/min, obtains spherical composite coating material Material;
(2) spray treatment:After spherical for step (1) gained composite coating material is dried with nanometer Fe powder body it is in mass ratio 1:0.5 is mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintering Condition is:120 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 10min.
Presently preferred technical scheme is:
The superhard surface treatment technology of steel part, described technique is that on ferrous alloy, cladding WC is combined using vacuum cladding method The technique of coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2~0.4: 0.1~0.3:0.08~0.2 ratio mixing, mixed powder is placed in ball mill, in the speed of 300~360r/min Ball milling at least 2h, ball-milling medium is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out ball Change is processed, and actual conditions is:Power 55kW, speed of dusting is 120g/min, and the flow velocity of carrier gas argon is 40L/min, obtains ball Shape composite coating material;
(2) spray treatment:After spherical for step (1) gained composite coating material is dried with nanometer Fe powder body it is in mass ratio 1:1.2 are mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintering Condition is:1250 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 5min.
Beneficial effects of the present invention are:The invention provides a kind of utilize vacuum cladding method cladding WC on ferrous alloy multiple The technique closing coating, the method for the invention prepares composite coating coating first so as to be pre-formed good dispersion degree, grain diameter Powder material uniform and that intensity is high, wearability is strong;Then utilize vacuum cladding method by obtained spherical raw material cladding in steel part Surface, obtains and has the high steel part of case hardness.
Specific embodiment
Following non-limiting examples can make those of ordinary skill in the art that the present invention is more fully understood, but not with Any mode limits the present invention.
Test method described in following embodiments, if no special instructions, is conventional method;Described reagent and material, such as No specified otherwise, all commercially obtains.
Embodiment 1
The superhard surface treatment technology of steel part, described technique is that on ferrous alloy, cladding WC is combined using vacuum cladding method The technique of coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2:0.25: 0.08 ratio mixing, mixed powder is placed in ball mill, and in the speed ball milling 2h of 300r/min, ball-milling medium is no Water-ethanol;Powder after ball milling is placed in induction plasma powder unit and carries out spheroidising, actual conditions is:Power 60kW, speed of dusting is 100g/min, and the flow velocity of carrier gas argon is 35L/min, obtains spherical composite coating material;Gained is spherical Composite coating material is spheroidal particle, and mean diameter is 25~60 microns;Described WC powder body, TiC powder, ZrC powder body, Co powder body Gross weight and dehydrated alcohol ratio be 1g:0.5mL.
(2) spray treatment:After spherical for step (1) gained composite coating material is dried with nanometer Fe powder body it is in mass ratio 1:0.5 is mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintering Condition is:120 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 10min.
The hardness of gained steel piece surface improves 89%.
Embodiment 2
The superhard surface treatment technology of steel part, described technique is that on ferrous alloy, cladding WC is combined using vacuum cladding method The technique of coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.4:0.1: 0.08 ratio mixing, mixed powder is placed in ball mill, and in the speed ball milling 2h of 360r/min, ball-milling medium is no Water-ethanol;Powder after ball milling is placed in induction plasma powder unit and carries out spheroidising, actual conditions is:Power 55kW, speed of dusting is 120g/min, and the flow velocity of carrier gas argon is 40L/min, obtains spherical composite coating material;Gained is spherical Composite coating material is spheroidal particle, and mean diameter is 25~60 microns;Described WC powder body, TiC powder, ZrC powder body, Co powder body Gross weight and dehydrated alcohol ratio be 1g:0.75mL.
(2) spray treatment:After spherical for step (1) gained composite coating material is dried with nanometer Fe powder body it is in mass ratio 1:1.2 are mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintering Condition is:1250 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 5min.
The hardness of gained steel piece surface improves 63%.

Claims (5)

1. the superhard surface treatment technology of steel part it is characterised in that:Described technique be using vacuum cladding method on ferrous alloy The technique of cladding WC composite coating, methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2~0.4:0.1~ 0.3:0.08~0.2 ratio mixing, mixed powder is placed in ball mill, in the speed ball milling of 300~360r/min At least 2h, ball-milling medium is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out at nodularization Manage, actual conditions is:Power 40~60kW, speed of dusting is 75~150g/min, and the flow velocity of carrier gas argon is 25~60L/ Min, obtains spherical composite coating material;
(2) spray treatment:With nanometer Fe powder body in mass ratio for 1 after spherical for step (1) gained composite coating material is dried: 0.5~1.2 is mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, and burns Knot condition is:1200~1350 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 5~30min.
2. technique according to claim 1 it is characterised in that:The spherical composite coating material of described step (1) gained is ball Shape granule, mean diameter is 25~60 microns.
3. technique according to claim 1 it is characterised in that:WC powder body, TiC powder, ZrC described in described step (1) The ratio of powder body, the gross weight of Co powder body and dehydrated alcohol is 1g:0.2~5mL.
4. technique according to claim 3 it is characterised in that:Methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2:0.25:0.08 Ratio mixing, mixed powder is placed in ball mill, the speed in 300~360r/min is milled to few 2h, ball milling is situated between Matter is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out spheroidising, actual conditions is: Power 60kW, speed of dusting is 100g/min, and the flow velocity of carrier gas argon is 35L/min, obtains spherical composite coating material;
(2) spray treatment:With nanometer Fe powder body in mass ratio for 1 after spherical for step (1) gained composite coating material is dried: 0.5 is mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintered bar Part is:120 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 10min.
5. technique according to claim 3 it is characterised in that:Methods described processing step is as follows:
(1) coating material preparation:WC powder body, TiC powder, ZrC powder body, Co powder body are in mass ratio 1:0.2~0.4:0.1~ 0.3:0.08~0.2 ratio mixing, mixed powder is placed in ball mill, in the speed ball milling of 300~360r/min At least 2h, ball-milling medium is dehydrated alcohol;Powder after ball milling is placed in induction plasma powder unit and carries out at nodularization Manage, actual conditions is:Power 55kW, speed of dusting is 120g/min, and the flow velocity of carrier gas argon is 40L/min, obtains spherical multiple Close coating material;
(2) spray treatment:With nanometer Fe powder body in mass ratio for 1 after spherical for step (1) gained composite coating material is dried: 1.2 are mixed, and mixed powder body is coated on steel piece surface, and steel part is placed in vacuum drying oven is sintered, sintered bar Part is:1250 DEG C of temperature, vacuum is less than 1 × 10-3Pa, time 5min.
CN201611064320.9A 2016-11-28 2016-11-28 Steel part surface ultra-hardening treatment process Pending CN106435581A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904545A (en) * 2017-11-18 2018-04-13 张晓娟 A kind of metal die surface duplex hardening treatment process
CN109321801A (en) * 2018-11-07 2019-02-12 许振华 A kind of nickel based metal ceramic composite coating and its preparation process
CN109702189A (en) * 2019-03-14 2019-05-03 上海海事大学 A kind of production method of cochrome base spherical carbide niobium powder body
CN111482611A (en) * 2019-03-07 2020-08-04 安徽中体新材料科技有限公司 Preparation method of spherical tungsten carbide-cobalt powder for 3D printing
CN112080677A (en) * 2019-06-12 2020-12-15 C4有限公司 Carbide material for cutting device and related manufacturing method

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CN103158292A (en) * 2011-12-15 2013-06-19 陕西天元材料保护科技有限公司 Wear resistant blade and processing method thereof
CN105177568A (en) * 2015-10-13 2015-12-23 四川科力特硬质合金股份有限公司 Hot-fritting tungsten carbide-other carbide solid solution alloy coating and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN101363119A (en) * 2008-09-28 2009-02-11 北京市粉末冶金研究所有限责任公司 Weldability modification method of complicated carbide hard alloy surface
CN102424970A (en) * 2011-12-05 2012-04-25 嘉鱼县海鑫合金制造有限公司 Technology for preparing hard alloy coating on surface of wear resistant part with powder metallurgy method
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904545A (en) * 2017-11-18 2018-04-13 张晓娟 A kind of metal die surface duplex hardening treatment process
CN109321801A (en) * 2018-11-07 2019-02-12 许振华 A kind of nickel based metal ceramic composite coating and its preparation process
CN111482611A (en) * 2019-03-07 2020-08-04 安徽中体新材料科技有限公司 Preparation method of spherical tungsten carbide-cobalt powder for 3D printing
CN109702189A (en) * 2019-03-14 2019-05-03 上海海事大学 A kind of production method of cochrome base spherical carbide niobium powder body
CN112080677A (en) * 2019-06-12 2020-12-15 C4有限公司 Carbide material for cutting device and related manufacturing method
EP3751019A1 (en) * 2019-06-12 2020-12-16 C4 Carbides Limited Carbide material for cutting devices and associated method of manufacture

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Application publication date: 20170222