CN100382922C - High rate steel and low carbide steel oxygen-free inlay process - Google Patents

High rate steel and low carbide steel oxygen-free inlay process Download PDF

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Publication number
CN100382922C
CN100382922C CNB2005100288058A CN200510028805A CN100382922C CN 100382922 C CN100382922 C CN 100382922C CN B2005100288058 A CNB2005100288058 A CN B2005100288058A CN 200510028805 A CN200510028805 A CN 200510028805A CN 100382922 C CN100382922 C CN 100382922C
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China
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steel
speed steel
speed
mild steel
low
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Expired - Fee Related
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CNB2005100288058A
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CN1879998A (en
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朱德荣
刘国方
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CHANGZHOU MECHANICAL BLADE Ltd
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CHANGZHOU MECHANICAL BLADE Ltd
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Abstract

The present invention relates to an oxygen-free inlay composite process for high-speed steel and low-carbon steel, which comprises the steps that a high-speed steel knife edge is put on a low-carbon steel knife body paved with brazing filler metals, and a hot rolled steel plate is covered on the high-speed steel and the low-carbon steel; the circumference of the hot rolled steel plate is welded and sealed with the low-carbon steel so that the high-speed steel is positioned in the sealing state isolated with air; the combination of the high-speed steel and the low-carbon steel is put in a heating furnace and is heated by ten minutes to twenty minutes under the temperature from 1130DEG. C to 1220DEG. C; the combination is rolled by two times in a rolling mill, the high-speed steel is compounded with the low-carbon steel into a whole, wherein the first rolled compression ratio is from 12 % to 26%, and the second rolled compression ratio is from 6% to 15%. The corresponding heat treatment is performed to a knife manufactured by using the present invention, and the rigidity of the high-speed steel knife edge reaches up to 66HRC. The knife has the characteristics of high temperature resistance, impact resistance shock resistance, long service life, etc.

Description

High-speed steel and mild steel non-oxidation edge system technology
Technical field
The present invention relates to a kind of edge system (soldering) combination process, relate in particular to a kind of high-speed steel and mild steel edge system (soldering) combination process under the non-oxidation state.
Background technology
High-speed steel is as shear steel, and mild steel is used to make cutter as the composite of cutter hub steel, has the advantage of high-speed steel blade, reduces cost again, especially is fit to make large-scale cutter.Two kinds of methods of the composite material by adopting of existing high-speed steel and mild steel, the one, no medium high compression ratio is compound, and the 2nd, adopt solder low compression ratio edge system.Adopt the copper solder, because the fusing point of copper is 1083 ℃, edge system temperature can only be at 1150~1200 ℃, to high-speed steel, and W18Cr4V particularly, because the copper solder can only be inlayed system back direct quenching, the heating-up temperature deficiency influences the serviceability of cutter; Adopt the crooked chisel material, tradition claims the edge steel, and high temperature heating over a long time makes the high-speed steel oxidation and decarbonization, and the qualification rate of edge system is low, only about 40~60%.
Summary of the invention
The present invention has overcome prior art high speed steel and mild steel adopts the low shortcoming of crooked chisel material edge system qualification rate, and the hardness of the cutter of employing copper solder edge system and the defective of bad mechanical property.A kind of high-speed steel and mild steel sky cerium oxide system combination process are provided, this technology is placed on the high-speed steel blade on the mild steel cutter hub that is covered with solder, cover the back welding with hot rolled steel plate, make high-speed steel be in the sealing state isolated with air, can be not oxidized when high temperature heats, improved the hardness and the mechanical performance of high-speed steel.The present invention is achieved in that a kind of high-speed steel and mild steel non-oxidation edge system combination process, and be characterized in that step comprises: (1) is placed on the high-speed steel blade on the mild steel cutter hub that is covered with solder, covers on high-speed steel and the mild steel with hot rolled steel plate; (2) with around the hot rolled steel plate with the mild steel welded seal, make high-speed steel be in the sealing state isolated with air; (3) combination of high-speed steel and mild steel is placed in the heating furnace heating 1130 ℃~1220 ℃ heating 10~20 minutes; (4) in milling train, combination is rolling through twice, and high-speed steel and mild steel are combined into one.
Solder among the present invention is 45~60% boraxs by percentage by weight, and 18~35% sodium fluorides and 15~25% iron powders are formed.
Operation principle of the present invention is, because high-speed steel passes through welding by hot rolled steel plate and mild steel sealing, can be not oxidized when high temperature heats, and utilize the high temperature of solder between high-speed steel and mild steel to soak into and diffusion, form firm transition zone after the cooling.Edge system (soldering) compound qualification rate reaches more than 98%.
The thickness of the hot rolled steel plate described in the present invention is 0.5~4mm.The steel plate of this thickness helps welded seal and later heating, rolling mill practice.
High-speed steel described in the present invention is W18Cr4V or W6Mo5Cr4V2, and described mild steel is Q235, and when high-speed steel is W18Cr4V, when mild steel was Q235, high-speed steel and mild steel and the combination heating-up temperature in heating furnace was 1180~1220 ℃; When high-speed steel is W6Mo5Cr4V2, when mild steel was Q235, the heating-up temperature of the combination of high-speed steel and mild steel in heating furnace was 1130~1170 ℃.
High-speed steel among the present invention is W18Cr4V, and twice rolling rolling compression ratio in first road was 20~26% when mild steel was Q235, and the rolling compression ratio in second road is 13~15%.
When the high speed steel W 6Mo5Cr4V2 mild steel among the present invention was Q235, twice first rolling road compression ratio was 12~16%, and the rolling compression ratio in second road is 6~12%.
The cutter that is combined into one can adopt the high-speed steel Technology for Heating Processing subsequently, as spheroidizing, and isothermal hardening.Give full play to the material behavior of high-speed steel.
The present invention is also applicable to the edge system of steel bonded carbide and high alloy tool steel.Compared with the prior art, the present invention has following remarkable result:
1, since high-speed steel by hot rolled steel plate and mild steel welded seal, high-speed steel is in and the air state of isolation, when combination high temperature is heated, high-speed steel is not oxidized, utilize the high temperature of solder between high-speed steel and mild steel to soak into and diffusion, the cooling back forms firm transition zone, and edge system (soldering) compound qualification rate reaches more than 98%, helps to improve the hardness and the mechanical performance of high-speed steel.
2, cutter of the present invention reaches the requirement of whole high-speed steel tool heat treatment metallographic structure owing to can adopt the high-speed steel Technology for Heating Processing subsequently, and hardness reaches 66HRC.
3, compound tool of the present invention is lower, widely applicable than the cost of investment of no medium compound tool; Than copper solder compound tool hardness height, long service life.
Description of drawings
Accompanying drawing is high-speed steel of the present invention and mild steel non-oxidation edge system Welding Structure schematic diagram.
Number in the figure is represented: 1-hot rolled steel plate, 2-weld seam, 3-mild steel (cutter hub steel), 4-high-speed steel (shear steel), 5-solder.
The specific embodiment
Now provide embodiments of the invention in conjunction with the accompanying drawings, embodiment is further specifying rather than limitation of the scope of the invention content of the present invention.
Embodiment 1:
The non-oxidation edge system technology of high speed steel W 18Cr4V and mild steel Q235.
(1) high speed steel W 18Cr4V and mild steel Q235 are worked into required process respectively, as faying face rust or greasy dirt are arranged, and then need machinery or chemical derusting oil removing.
(2) hot rolled steel plate size blanking as required, steel plate thickness are 2mm.
(3) in mild steel (3) groove, spread solder (5), high-speed steel (4) is placed on the mild steel (3) that is covered with solder (5), cover on high-speed steel (4) and the mild steel (3) with hot rolled steel plate (1), with hot rolled steel plate (1) all around with mild steel (3) welded seal.Solder is 50% borax by percentage by weight, and 30% fluoridizes and receives and 20% iron powder is formed.
(4) combination of high-speed steel (4) and mild steel (3) heated in heating furnace 10~15 minutes, and it is rolling to come out of the stove.
(5) rolling through twice in φ 250mm milling train, the rolling compression ratio 13~15% in rolling compression ratio 20~26%, second road, first road is combined into one high speed steel W 18Cr4V (4) and mild steel Q235 (3) edge system.
(6) after the cooling, compound tool enters down road high-speed steel Technology for Heating Processing, reaches the requirement of whole high-speed steel tool heat treatment metallographic structure, and hardness reaches 66HRC.
Embodiment 2:
The non-oxidation edge system technology of high speed steel W 6Mo5Cr4V2 and mild steel Q235.
(1) high speed steel W 6Mo5Cr4V2 and mild steel Q235 are worked into required process respectively, as faying face rust or greasy dirt are arranged, and then need machinery or chemical derusting oil removing.
(2) hot rolled steel plate is pressed the required size blanking, and steel plate thickness is 3mm.
(3) in mild steel (3) groove, spread solder (5), high-speed steel (4) is placed on the mild steel (3) that is covered with solder (5), cover on high-speed steel (4) and the mild steel (3) with hot rolled steel plate (1), with hot rolled steel plate (1) all around with mild steel (3) welded seal.Solder is 55% borax by percentage by weight, and 25% fluoridizes and receives and 20% iron powder is formed.
(4) combination of high-speed steel (4) and mild steel (3) in the cushioning stove 1170 ℃ the heating 12~18 minutes, it is rolling to come out of the stove.
(5) rolling through twice in the milling train of φ 250mm, the rolling compression ratio 6~12% in rolling compression ratio 1 2~16%, second road, first road is combined into one high speed steel W 6Mo5Cr4V2 (3) and mild steel Q235 (2) edge system.
(6) after the cooling, compound tool enters down road high-speed steel Technology for Heating Processing, reaches the requirement of whole high-speed steel tool heat treatment metallographic structure, and hardness reaches 66HRC.

Claims (5)

1. high-speed steel and mild steel non-oxidation edge system technology is characterized in that step comprises:
(1) the high-speed steel blade is placed on the mild steel cutter hub that is covered with solder, covers on high-speed steel and the mild steel with hot rolled steel plate;
(2) with around the hot rolled steel plate with the mild steel welded seal, make high-speed steel be in the sealing state isolated with air;
(3) combination with high-speed steel and mild steel was placed in the heating furnace, 1130 ℃~1220 ℃ heating 10~20 minutes;
(4) in milling train, combination is rolling through twice, and high-speed steel and mild steel are combined into one.
2. edge system technology according to claim 1 is characterized in that: the thickness of described hot rolled steel plate is 0.5~4mm.
3. edge system technology according to claim 1, it is characterized in that: described high-speed steel is W18Cr4V or W6Mo5Cr4V2, and mild steel is Q235, when high-speed steel is W18Cr4V, when mild steel was Q235, the heating-up temperature of combination in heating furnace was 1180-1220 ℃; When high-speed steel is a W6Mo5Cr4V2 mild steel when being Q235, the heating-up temperature of combination in heating furnace is 1130-1170 ℃.
4. according to claim 1 or 3 described edge system technologies, it is characterized in that: when high-speed steel is a W18Cr4V mild steel when being Q235, twice rolling rolling compression ratio in first road is 20~26%, and the rolling compression ratio in second road is 13-15%.
5. according to claim 1 or 3 described edge system technologies, it is characterized in that: when high-speed steel is a W6Mo5Cr4V2 mild steel when being Q235, twice rolling rolling compression ratio in first road is 12~16%, and the rolling compression ratio in second road is 6~12%.
CNB2005100288058A 2005-08-15 2005-08-15 High rate steel and low carbide steel oxygen-free inlay process Expired - Fee Related CN100382922C (en)

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CN100382922C true CN100382922C (en) 2008-04-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101962738A (en) * 2010-11-10 2011-02-02 常州机械刀片有限公司 Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100462191C (en) * 2007-04-13 2009-02-18 辽宁新华阳刃具复合材料有限公司 Method of producing three layer clad sheet steel used for cutting-tool
CN100462192C (en) * 2007-04-13 2009-02-18 辽宁新华阳刃具复合材料有限公司 Method of producing cutting tool steel board of complex blades
CN100558495C (en) * 2007-12-26 2009-11-11 上海爱凯思机械刀片有限公司 A kind of complex method of multi-alloy blank
CN102357742B (en) * 2011-10-21 2013-07-31 常州机械刀片有限公司 Super-plastic and non-oxidation method of welding and splicing steel to mechanical blades
CN108067847B (en) * 2017-12-20 2019-07-16 安徽嘉龙锋钢刀具有限公司 A kind of half soldering edge steel method of the superplasticity scale-free heating of mechanical bit
CN108747076B (en) * 2018-06-20 2020-07-03 东阿县利源机械刀具有限公司 Fixing and welding method for high-speed steel bars of cutter
CN110983186A (en) * 2019-12-23 2020-04-10 镇江中森科技有限公司 High alloy tool steel, method for manufacturing same, and method for using same as cutting edge steel insert-joint slicing knife

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Publication number Priority date Publication date Assignee Title
JPH0957506A (en) * 1995-08-22 1997-03-04 Daido Steel Co Ltd Corrosion-resisting clad material for cutter and manufacture thereof
JPH1058378A (en) * 1996-08-12 1998-03-03 Daido Steel Co Ltd Plate material for cutter, cutter using the material and manufacture of the material and the cutter
JPH1123661A (en) * 1997-06-30 1999-01-29 Nec Corp Scan testing circuit
JPH11277669A (en) * 1998-03-31 1999-10-12 Daido Steel Co Ltd Corrosion-resistant and wear-resistant clad member and its manufacture
JP2002361443A (en) * 2001-05-31 2002-12-18 Kanai Hiroaki Method of manufacturing knife cutter material, knife cutter material and knife cutter
CN1597218A (en) * 2004-08-11 2005-03-23 高文辉 Flux powder high-speed steel cutting edge welding method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0957506A (en) * 1995-08-22 1997-03-04 Daido Steel Co Ltd Corrosion-resisting clad material for cutter and manufacture thereof
JPH1058378A (en) * 1996-08-12 1998-03-03 Daido Steel Co Ltd Plate material for cutter, cutter using the material and manufacture of the material and the cutter
JPH1123661A (en) * 1997-06-30 1999-01-29 Nec Corp Scan testing circuit
JPH11277669A (en) * 1998-03-31 1999-10-12 Daido Steel Co Ltd Corrosion-resistant and wear-resistant clad member and its manufacture
JP2002361443A (en) * 2001-05-31 2002-12-18 Kanai Hiroaki Method of manufacturing knife cutter material, knife cutter material and knife cutter
CN1597218A (en) * 2004-08-11 2005-03-23 高文辉 Flux powder high-speed steel cutting edge welding method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101962738A (en) * 2010-11-10 2011-02-02 常州机械刀片有限公司 Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade
CN101962738B (en) * 2010-11-10 2012-10-17 常州机械刀片有限公司 Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade

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