CN201405549Y - Bimetal composite structure of powder high-speed steel and structural steel - Google Patents
Bimetal composite structure of powder high-speed steel and structural steel Download PDFInfo
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- CN201405549Y CN201405549Y CN2009201197613U CN200920119761U CN201405549Y CN 201405549 Y CN201405549 Y CN 201405549Y CN 2009201197613 U CN2009201197613 U CN 2009201197613U CN 200920119761 U CN200920119761 U CN 200920119761U CN 201405549 Y CN201405549 Y CN 201405549Y
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Abstract
The utility model relates to a bimetal composite structure of powder high-speed steel and structural steel, which comprises a structural steel material layer. The bimetal composite structure is characterized in that a transitional layer formed by spark plasma sintering of a powder high-speed steel sintering layer and the structural steel material layer are connected into a whole. The structural steel material layer adopts a rod-shaped structure; and the bimetal composite structure realizes the composition of the high-speed steel and the structural steel and simultaneously completes the sintering of the powder metallurgic high-speed steel and the composition with the structural steel at one time, a composition interface is a metallurgic interface, elements are diffused on two sides of the interface, the bonding strength of the interface is 500 to 600 MPa, the bonding strength of the interface is greater than that of the bimetal composite material prepared by sand mold inlaying and casting, composite casting and the traditional sintering method, and the bimetal composite structure has the advantages of energy conservation, low cost and saved using amount of the high-speed steel.
Description
Technical field
The utility model relates to a kind of composite construction that can be used for the metal cutting of maker processing industry with the thermometal-powder high-speed steel tool.
Background technology
Along with industrial expansion, to the obdurability and the resistance to elevated temperatures requirement raising day by day of material.In actual production, some workpiece often requires the existing good toughness of material, with the percussion of material in the opposing course of work, prevents the parts fracture that meets accident, and the while requires it to have high hardness and good polishing machine again.Compound functional requirement and the working condition that is meant according to part and component of bimetallic, by design with select two kinds of chemistry, metal material that physical property is different to be combined in certain mode, ratio, distribution.It has the advantage of two kinds of metals concurrently, can provide different performance at the part different parts, reaches the homogenous material combination property that is beyond one's reach, and can effectively reduce production cost.
PM HSS has high rigidity, high abrasion, high cutting toughness and good post-curing characteristic, is widely used in cutting element, cold and hot tool and mould and other high abrasions, high temperature resistant cutting material and constitutional detail.From the angle of practicality and economy, adopt the bimetallic composite methods, with PM HSS, low-cost structure steel material, the composite construction that couples together by transition zone is with practical value.
The preparation technology of bimetallic composite construction commonly used has three kinds, first welding method (as soldering, friction welding (FW), diffusion welding (DW) etc.), but welding quality is wayward, and solder side intensity is low; It two is milling methods, and this method can realize the compound of alloy tool steel such as 6CrW2Si etc. and mild steel, but is not suitable for the compound of high-speed steel and mild steel, because the rolling temperature of high-speed steel is 1150 ℃, and plasticity is relatively poor, is difficult to realize compound.It three is powder sintering methods, and this method can realize the compound of powder high-speed steel and structural steel, but conventional sintering method interface bond strength is low.
High-speed steel/45 steel interface bond strengths that Jilin University's Liu Haifeng adopts the sand mold insert process to obtain are 50～300MPa, the shear strength of rich chromium cast iron/45 steel compound interfaces that the Liu Qing of Zhengzhou University plum composite casting obtains is 80～320MPa, and the Zhou Xiaoping of Wuhan science and engineering adopts 45 steel and the carbide alloy bond strength of conventional powder sintering to reach 400MPa.
For this reason, be necessary further to improve powder high-speed steel and structural steel bimetallic composite construction, to give full play to the premium properties of high-speed steel as the high-temperature machining material.
The utility model content
The purpose of this utility model is to provide a kind of can be used in to make powder high-speed steel and the structural steel bimetallic composite construction that thermometal-powder is high-speed steel tool, that interface bond strength is high, can satisfy service life.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of powder high-speed steel and structural steel bimetallic composite construction, it includes the structural steel bed of material, it is characterized in that powder high-speed steel sinter layer connects into single piece by the transition zone and the structural steel bed of material of discharge plasma sintering.
The described structural steel bed of material adopts clavate structure or slab structure.
Described powder high-speed steel sinter layer thickness is in 6～10mm scope.
Described structural steel thickness of feed layer is in 6～10mm scope.
Described transition depth is at 10～20 mu m ranges.
Its manufacture method steps in sequence is:
(1) raw material is chosen: high-speed steel raw meal and structural steel bar or plate;
(2) preformed: load weighted high-speed steel powder and ready structure rod iron (plate) material are put into mould by powder, rod iron material from bottom to top, carry out precompressed during the one deck of every shop;
(3) sintering.
In the described step (3), use the discharge plasma sintering stove to carry out sintering.
Be strictness control sintering temperature, in the described step (3), sintering temperature is got by high temperature thermometric instrumentation in the sintering furnace.
Described sintering is to adopt gradient shape temperature programming method.
Compared with prior art, remarkable advantage of the present utility model is: (1) because of discharge plasma sintering technique have programming rate fast, be heated evenly, sintering time is short, the sintered body uniform crystal particles is tiny, the relative density advantages of higher, can obtain to be better than the PM HSS material of general powder metallurgy process preparation.(2) the disposable sintering of having realized PM HSS and compound with structural steel thereof.(3) compound interface is a metallurgical binding, there is Elements Diffusion the both sides, interface, interface bond strength is at 500～600MPa, and interface bond strength is higher than the double metallic composite material of sand mold castingin, composite casting, the preparation of conventional sintering method, and saves the energy, cheap, saving high-speed steel consumption.
Description of drawings
Fig. 1 is high-speed steel powder and structural steel connection diagram;
Fig. 2 is powder high-speed steel of the present invention and structural steel composite construction schematic diagram;
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment one: M42 (W2M9Cr4VCo8) and 45 bimetal copper-steel composite constructions
As schematically shown in Figure 1,4 is the high-speed steel powder bed, and 5 is structural steel layer such as bar; Illustrated in Figure 2,1 is the powder high-speed steel sinter layer in the composite construction, and 2 is the transition zone in the composite construction, and 3 is the structural steel bed of material such as the bar in the composite construction;
(1) choose M42 (W2M9Cr4VCo8) high-speed steel raw meal, and 45 rod iron material;
(2) with the high-speed steel raw meal, put into graphite jig in proper order according to powder, 45 rod iron material from bottom to top, carry out precompressed behind the one deck of every shop;
(3) sintering adopts discharge plasma sintering.
Thereby obtained a kind of powder high-speed steel and structural steel bimetallic composite construction, powder high-speed steel sinter layer 1 connects into single piece by the transition zone 2 of discharge plasma sintering with the structural steel bed of material 3.
Adopt this utility model, made the powder high-speed steel and the structural steel bimetallic composite construction of high interfacial bonding strength; Adopt the bimetallic composite construction of this utility model preparation, can be used for making the thermometal-powder high-speed steel tool, powder high-speed steel blade can satisfy that cutting requires and the structural steel handle of a knife can bear the work shock loading, the cost of charp tool of comparing whole use powder high-speed steel manufacturings is cheap, and can satisfy in aspect extensive uses such as metal cutting, wood cuttings with the cutter of this composite construction manufacturing.
Embodiment two: the preparation of W18Cr4V and 45 bimetal copper-steel composite constructions
Embodiment two and embodiment one are basic identical.Different is: the powder high-speed steel has changed W18Cr4V into.
Adopt this utility model, made the powder high-speed steel and the structural steel bimetallic composite construction of high interfacial bonding strength;
Adopt the bimetallic composite construction of this utility model preparation, can be used for making the thermometal-powder high-speed steel tool, powder high-speed steel blade can satisfy that cutting requires and the structural steel handle of a knife can bear the work shock loading, the cost of charp tool of comparing whole use powder high-speed steel manufacturings is cheap, and can satisfy in aspect extensive uses such as metal cutting, wood cuttings with the cutter of this composite construction manufacturing.
Claims (6)
1. powder high-speed steel and structural steel bimetallic composite construction, it includes the structural steel bed of material, it is characterized in that powder high-speed steel sinter layer connects into single piece by the transition zone and the structural steel bed of material that discharge plasma sintering forms.
2. bimetallic composite construction according to claim 1 is characterized in that the described structural steel bed of material adopts the clavate structure.
3. bimetallic composite construction according to claim 1 is characterized in that the described structural steel bed of material adopts platy structure.
4. bimetallic composite construction according to claim 1 is characterized in that described powder high-speed steel sinter layer thickness is in 6～10mm scope.
5. bimetallic composite construction according to claim 1 is characterized in that described structural steel thickness of feed layer is in 6～10mm scope.
6. bimetallic composite construction according to claim 1 is characterized in that described transition region thickness is at 10～20 mu m ranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201197613U CN201405549Y (en) | 2009-05-12 | 2009-05-12 | Bimetal composite structure of powder high-speed steel and structural steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201197613U CN201405549Y (en) | 2009-05-12 | 2009-05-12 | Bimetal composite structure of powder high-speed steel and structural steel |
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| Publication Number | Publication Date |
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| CN201405549Y true CN201405549Y (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201197613U Expired - Fee Related CN201405549Y (en) | 2009-05-12 | 2009-05-12 | Bimetal composite structure of powder high-speed steel and structural steel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889430A (en) * | 2015-05-29 | 2015-09-09 | 苏州亚思科精密数控有限公司 | Cutter used for numerical control machine tool |
| CN113352353A (en) * | 2021-06-03 | 2021-09-07 | 湖南三泰新材料股份有限公司 | Bimetal composite cutter and manufacturing method thereof |
| CN113894505A (en) * | 2021-10-29 | 2022-01-07 | 湖南三泰新材料股份有限公司 | Composite cutter blank and preparation method thereof |
-
2009
- 2009-05-12 CN CN2009201197613U patent/CN201405549Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104889430A (en) * | 2015-05-29 | 2015-09-09 | 苏州亚思科精密数控有限公司 | Cutter used for numerical control machine tool |
| CN113352353A (en) * | 2021-06-03 | 2021-09-07 | 湖南三泰新材料股份有限公司 | Bimetal composite cutter and manufacturing method thereof |
| CN113894505A (en) * | 2021-10-29 | 2022-01-07 | 湖南三泰新材料股份有限公司 | Composite cutter blank and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20130512 |