CN1236683A - Process for preparing metal-base particles reinforced composite material - Google Patents
Process for preparing metal-base particles reinforced composite material Download PDFInfo
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- CN1236683A CN1236683A CN 98101890 CN98101890A CN1236683A CN 1236683 A CN1236683 A CN 1236683A CN 98101890 CN98101890 CN 98101890 CN 98101890 A CN98101890 A CN 98101890A CN 1236683 A CN1236683 A CN 1236683A
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Abstract
A smelting-solidifying process for preparing metal-base particles reinforced composite material is disclosed. Its apparatus is composed of feeder, forming mould, smelting body (area), inductive heating coil, solidified unit, bench, lifter, power supply for inductive heating, and microcomputer controller. Its advantage is to improve properties of the material with lower cost. For the steel-base WC reinforced composite material, its volume percentage is up to 40%, its relative density is up to 100%, its hardness is up to HRC60, its bending strength is 1400 MPa, and its cost is decreased by 20-40%.
Description
The invention provides a kind of method for preparing metal-base particles reinforced composite material.
The metal-base particles reinforcing material has good mechanical performance (high specific strength, specific stiffness, high elastic modulus etc.) machine high-wearing feature and low-thermal-expansion rate, is widely adopted.Now Chang Yong preparation method has: powder metallurgic method, melt body paddling process and spraying co-electrodeposition method etc.
Powder metallurgic method can be mixed the matrix of various different performances with particle in all proportions, and the wild phase percentage by volume can reach 20～50%, and its enhancing distribution of particles of the material that makes is even, and combination property is better, is method commonly used.About in the book of powder metallurgy the method all being had introduction, " the Powdermetallurgy Science " of R.M.German for example, Metal Powder Industries Federation, 1984. etc.But because this technology needs through mixing steps such as powder, compacting, sintering, technology is complicated, thereby has improved the material preparation cost, is only limited to little cost production, and the material that makes exists and is difficult to reach solid density, the more high shortcoming of content of surface oxygen, has also limited the application that further develops of this technology.
Melt body paddling process or jet particle casting and be in liquid metal, to add and strengthen particle and in addition churned mechanically method (Japan Patent, daybreak Block レ-キ: 57-130464).Its technology is easier, and cost is lower, be restricted but the problem that exists is the addition of particle, and the effect of mechanical force is difficult for making uniform particles to distribute.
The spraying co-electrodeposition method is with high-velocity fluid molten metal to be smashed to be injected in jointly with the wild phase particle after the atomizing again to make composite in the substrate.This is a kind of newer technology, has many superiority, because particle and parent metal reaction time are short, thereby have reduced the generation of interfacial brittle phase, thereby has improved load transmission and anti-crack ability when composite is out of shape.The material that this in addition technology makes has less gross segregation, and operation is simpler, be a kind of more promising composite material and preparation method thereof (R.G.Broojs, et al:Powder Met.20, No.21977, p100).But the defective of spraying co-electrodeposition method is the difficult control of its technological parameter, and the wild phase volume fraction can not be too high, and the shape that makes material is difficult to control, and these problems have limited its technology as a kind of preparation particle reinforcing material of routine.
Metal-base composites has had bigger development in recent years, also continually develops out some new type of metal based composites.Mainly be above-mentioned several on the preparation method.According to growing research, exploitation and the demand of producing, the technology of preparing of the metal-base composites that the needs exploitation makes new advances.
The object of the invention is to utilize the smelting-solidifying process technology to prepare metal-base particles reinforced composite material, realizes low-cost, high-performance.
Formation of the present invention:
The present invention takes the smelting-solidifying process technology; it is characterized in that will be as the granular materials (carbide of wild phase; nitride; boride; silicide etc.) and as the metal material of matrix be provided to continuously in the finishing die with particle or Powdered top, make the material fusing that joins in the mould with high-frequency heating 10～100kW from finishing die.After material melts, drive lift finishing die is moved downward with respect to heating source.The part of leaving heating source is solidified gradually, and the raw material that provide continuously from top continue to be heated thawing.Regulate by feeding speed 5～200g/min and mould decrease speed 2～100mm/min, make melting zone keep the dynamic equilibrium of 2～40mm scope height.Like this, matrix and strengthen the fusion of body material and solidify and will in mould, carry out continuously from bottom to top and progressively finish, thus reach the purpose for preparing composite.
The smelting-solidifying process technology is utilized electric power, feeding speed, and cooperating of the relative moving speed of finishing die and heating source makes melting zone keep the scope of 2～40mm.And utilize function composite by electromagnetic stirring, can make and melt the body composition and distribution of particles is uniform state.And material can reach solid density.In preparation process, can adopt 2～6 loaders feed respectively, the ratio of the wild phase in the composite can be effectively, accurately control.By the adjustment of dies cavity shape, can once reach or near the predetermined prod shape.A kind of method for preparing metal-base particles reinforced composite material is provided.
The invention has the advantages that material property improves and cost reduces.Strengthen base steel composite material for WC, the volume fraction that strengthens body reaches 40%, and relative density reaches 100%, and hardness reaches HRC60, and bending strength is 1400MPa.Cost is reduced to 60% of powder metallurgy, melts 80% of body paddling process, 70% of spraying co-electrodeposition method.
The present invention is further described below in conjunction with accompanying drawing.Fig. 1 is a kind of device schematic diagram of realizing the inventive method, (1) is loader, (2) be finishing die, (3) be melt (melting zone), (4) are the heating source induction coil, and (5) are for solidifying part, (6) be workbench, (7) be lift, (8) are induction heating power, and (9) are the microcomputer control section.
Embodiment
Raw material: 45 steel (particle, granularity～1mm), WC powder (granularity～1 μ m).
According to technology of the present invention, steel grit and WC powder are provided to 30g in the mould by institute's certainty ratio, with high frequency electric source heating, material begins to melt the postforming mould and moves down with respect to heating source, simultaneously from the raw material of continuous steel grit in the top of mould and WC powder.The specified output 20kW of power supply, feeding speed 16g/min, mould decrease speed 8mm/min.Make the WC particle reinforced composite.WC content 40wt%, microstructure is even, relative density 100%, hardness HRC60, bending strength 1400MPa.
Claims (1)
1. a method for preparing metal-base particles reinforced composite material adopts the smelting-solidifying process technology, it is characterized in that:
A. will be as the granular materials (carbide of wild phase, nitride, boride, silicide etc.) and as the metal material of matrix be provided to continuously in the finishing die with particle or Powdered top, make the material fusing that joins in the mould with high-frequency heating 10～100kW from finishing die; After material melts, drive lift finishing die is moved downward with respect to heating source; The part of leaving heating source is solidified gradually, and the raw material that provide continuously from top continue to be heated thawing; Regulate by the speed 5～200g/min of loader and the speed 2～100mm/min of lift, make melting zone keep the dynamic equilibrium of 2～40mm scope height; Like this, matrix and strengthen the fusion of body material and solidify and will in mould, carry out continuously from bottom to top and progressively finish, thus reach the purpose for preparing composite;
B. the smelting-solidifying process technology is utilized electric power, feeding speed, and cooperating of the relative moving speed of finishing die and heating source makes melting zone keep the scope of 2～40mm; And utilize function composite by electromagnetic stirring, can make and melt the body composition and distribution of particles is uniform state; And material can reach solid density, in preparation process, can adopt 2～6 loaders feed respectively, and the ratio of the wild phase in the composite can be effectively, accurately control; Adopt the finishing die of cavity shape complexity, can once reach or, provide a kind of method for preparing metal-base particles reinforced composite material near the predetermined prod shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101890A CN1086615C (en) | 1998-05-26 | 1998-05-26 | Process for preparing metal-base particles reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101890A CN1086615C (en) | 1998-05-26 | 1998-05-26 | Process for preparing metal-base particles reinforced composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1236683A true CN1236683A (en) | 1999-12-01 |
| CN1086615C CN1086615C (en) | 2002-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98101890A Expired - Fee Related CN1086615C (en) | 1998-05-26 | 1998-05-26 | Process for preparing metal-base particles reinforced composite material |
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| Country | Link |
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| CN (1) | CN1086615C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811197A (en) * | 2010-04-14 | 2010-08-25 | 北京科技大学 | Method for preparing nano-scale dispersion-strengthened metal powder by microemulsion |
| CN105492142A (en) * | 2013-08-02 | 2016-04-13 | 卡斯丁技术国际有限公司 | Forming a metal component |
| CN110976817A (en) * | 2019-12-10 | 2020-04-10 | 昆明理工大学 | Lotus root-shaped porous metal material preparation device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104019A (en) * | 1987-06-01 | 1988-12-14 | 凌源特钢制件厂 | The manufacture method of copper material and shaped piece blank thereof |
| DE4207379A1 (en) * | 1992-03-09 | 1993-09-16 | Asea Brown Boveri | METHOD AND PRODUCTION OF A SINTERED COATER OF HIGH-ALLOY STEEL POWDER |
-
1998
- 1998-05-26 CN CN98101890A patent/CN1086615C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811197A (en) * | 2010-04-14 | 2010-08-25 | 北京科技大学 | Method for preparing nano-scale dispersion-strengthened metal powder by microemulsion |
| CN105492142A (en) * | 2013-08-02 | 2016-04-13 | 卡斯丁技术国际有限公司 | Forming a metal component |
| CN110976817A (en) * | 2019-12-10 | 2020-04-10 | 昆明理工大学 | Lotus root-shaped porous metal material preparation device and method |
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| Publication number | Publication date |
|---|---|
| CN1086615C (en) | 2002-06-26 |
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