CN101412095A - Method for preparing composite wear-resistant foreplate - Google Patents
Method for preparing composite wear-resistant foreplate Download PDFInfo
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- CN101412095A CN101412095A CNA2008102324974A CN200810232497A CN101412095A CN 101412095 A CN101412095 A CN 101412095A CN A2008102324974 A CNA2008102324974 A CN A2008102324974A CN 200810232497 A CN200810232497 A CN 200810232497A CN 101412095 A CN101412095 A CN 101412095A
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Abstract
The invention discloses a method for preparing a composite antiwear guide plate, which comprises the following steps: alloy dust core bars are bound into bundles and arranged in a guide plate casting mould cavity, and the volume of the alloy dust core bars accounts for 20 to 60 percent of the total volume of the guide plate; molten matrix metal is cast into the guide plate casting mould cavity, the alloy dust core bars are melted and dissolved under the heat effect of the matrix metal, a great number of alloy elements and the molten matrix metal generate metallurgical combination reaction so as to generate a highly dispersed alloy structure on the original position; and finally the alloy structure is cooled and solidified, and the bar-shaped hard phase is metallurgically and transitionally combined into a whole with the matrix metal, thereby preparing the composite guide plate which takes the high-strength and high-ductility metal as the matrix and contains a certain number of metallurgically combined bar-shaped hard points. The composite anti-wear guide plate has high strength and high ductility of the matrix metal and high hardness and high wear resistance of the hard phase, can simultaneously bear high pressure and strong wear, and has the characteristics of long service life, low price, simple preparation and so on.
Description
Technical field
The present invention relates to the preparation of a kind of steel rolling with foreplate, the preparation method who particularly relates to a kind of composite wear-resistant foreplate, the composite wear-resistant foreplate of this method preparation, wherein contain the column shaped horniness point, realized the organic unity of wearability and obdurability, the overall mechanical properties of foreplate is significantly improved.
Background technology
In the section bar of metallurgical industry is produced, the rolling mill foreplate mould that is absolutely necessary.The foreplate working environment is very abominable, and they usually afford the utmost point cold-working of thermic load, large impact, strong wear, extruding and the cooling water of high temperature billet steel in the course of the work and use.This will differentiate defends the sheet material material must possess high intensity hardness and excellent abrasive, also must possess high impact flexibility and non-oxidizability, thermal fatigue resistance etc. simultaneously.The most high-chromium-nickel alloy steels that adopt of the foreplate that uses are done at present, and wearability is better.But because the phosphorus content height, fragility is bigger, and contains multiple alloying element, causes production cost higher, and is less economical.In this case, single ability matter obviously has been difficult to satisfy the requirement of the harsh operating mode of foreplate, must walk the road of composite, just might take into account the high-wearing feature and the obdurability of material simultaneously.
Summary of the invention
Defective or deficiency at above-mentioned prior art existence, the object of the present invention is to provide a kind of preparation method of composite wear-resistant foreplate, the foreplate of this method preparation, be composited by high rigidity column shaped horniness point and high tenacity parent metal two parts, the high strength and the high tenacity that had both had parent metal, the high rigidity and the high-wearing feature that have the hard phase again can be born HI high impact and strong wear simultaneously, have long service life, cheap, preparation characteristics such as simple.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of preparation method of complex abrasion-proof guide plate, it is characterized in that, this method is rolled the alloy powder core bar bundled, be arranged in the die cavity of guide plate casting mold, alloy powder core bar bundle accounts for 20%～60% of guide plate cumulative volume, then the parent metal liquid of fusing is poured in the casting mold die cavity of guide plate, under the heat effect of parent metal, the alloy powder core bar melts, dissolving, a large amount of alloying elements and parent metal liquid in the alloy powder core bar produce metallurgical combination reaction, generate highly dispersed alloy structure in position, last cooled and solidified forms bar-shaped hard and combines with the transition of parent metal metallurgy and combine together, and the metal made from high-toughness high-strength is a matrix, include the complex abrasion-proof guide plate of bar-shaped high rigidity particle of the metallurgical binding of some.
Adopt the complex abrasion-proof guide plate of method preparation of the present invention to have the following advantages:
1, owing to adopt the alloy powder core bar, inner filler alloys powder, under the high temperature action of parent metal liquid, alloy powder sintering in the alloy powder core bar, dissolving, diffusion, metallurgical combination reaction takes place with parent metal liquid, simultaneously because the heat-absorbing action of alloy powder, reduced local temperature, shortened crystallization process, hindered the further diffusion of alloying element, thereby made alloying element enrichment in position, the remarkable refinement of crystal grain, separate out the hard compounds of the high rigidity of a large amount of disperses, just formed the hard phase that is bar-shaped on the macroscopic view that is embedded in the parent metal after solidifying, and combine with the transition of parent metal formation excellent metallurgical, the interface is in conjunction with firm, having solved hard comes off mutually, a cracked difficult problem, wearability and toughness organic unity, overall performance significantly improves.
2, alloy powder can carry out proportioning according to the instructions for use of foreplate, and composition is adjustable, and is applied widely.
3, because the alloy powder core bar does not contain impurity such as binding agent, therefore can not produce defectives such as slag inclusion, pore, interior tissue is good.
4, composite molding technique controllability of the present invention is strong, yield rate is high, the quality of production is stable, is convenient to large-scale production.
5, column shaped horniness point generates for whole reaction in-situ, avoids cracking phenomena that usually occurs in the technical process such as castingin is compound, built-up welding is compound and the obscission in the use.
6,, can regulate the ratio of column shaped horniness point in matrix and the diameter and the distribute spacing of column shaped horniness point, and be evenly distributed according to the foreplate applying working condition;
7,, can realize region composite, surface recombination or whole compound according to the version of foreplate.
Description of drawings
Fig. 1 is a composite wear-resistant foreplate preparation technology schematic diagram;
Fig. 2 is the composite wear-resistant foreplate structural front view;
Fig. 3 is the composite wear-resistant foreplate A-A cutaway view of Fig. 2.
The embodiment that provides below in conjunction with accompanying drawing and inventor is described in further detail the present invention.
The specific embodiment
Referring to accompanying drawing, according to technical scheme of the present invention, the alloy powder core bar 1 of preparation certain diameter and alloy powder proportioning, roll bundled with certain size and a certain proportion of alloy core bar, be arranged in the casting mold die cavity 2 of foreplate, alloy powder core bar bundle accounts for 20%～60% of guide plate cumulative volume.Then the parent metal liquid 3 of fusing is poured in the casting mold die cavity of guide plate, under the heat effect of parent metal 3, alloy powder core bar 1 melts, dissolves, a large amount of alloying elements in the alloy powder core bar 1 and parent metal 3 liquid produce metallurgical combination reaction, generate highly dispersed alloy structure in position, last cooled and solidified forms bar-shaped hard and 4 combines with parent metal 3 metallurgical transition and to combine together mutually, and to make metal with high-toughness high-strength be matrix, include the compound guide plate of bar-shaped high rigidity particle of the metallurgical binding of some.
Above-mentioned alloy powder core bar 1 diameter is Φ 1mm～Φ 10mm, and its crust is 0.1～1mm for the low carbon steel pipe wall thickness, and core is that granularity is 50～200 purpose alloy powders.
The alloy powder of above-mentioned alloy powder core bar 1 core is made of high-carbon chromium iron, can add alloyed powders such as molybdenum-iron powder, ferrotungsten powder, ferrosilicon powder, ferromanganese powder as required.
Above-mentioned alloy powder also can be made of in tungsten carbide, carborundum, titanium carbide, aluminium oxide, silicon nitride, the titanium nitride powder one or more.
Above-mentioned parent metal 3 is a kind of in known cast steels such as potassium steel, mild steel, steel alloy, grey cast-iron, spheroidal graphite cast-iron or the cast iron.
Below be the embodiment that the inventor provides, the present invention is not limited to following examples.
Embodiment 1: the preparation high-chromium alloy is that hard phase, A3 steel are the bar-shaped composite wear-resistant foreplate of matrix
1, it is bundled to select for use the alloy powder core bar 1 of 3mm diameter to roll, and the alloy powder of packing in the alloy powder core bar 1 is a high-carbon chromium iron, and granularity 100～150 orders are cut into the height identical with foreplate thickness;
2, adopt resin sand to require to make guide plate casting mold 2 according to casting technique;
3, with alloy powder core bar bundle according to 50% the ratio that accounts for the wear-resistant foreplate volume, be arranged in the die cavity of casting mold 2 of wear-resistant foreplate;
4, select for use the A3 steel as parent metal 3, after intermediate frequency furnace smelting fusing, reach 1600 ℃ and come out of the stove, molten steel is poured in the die cavity of guide plate casting mold 2, till filling with;
5, room temperature cooling, treat the molten metal cooled and solidified after, take out foundry goods, sand removal is handled, promptly make high-chromium alloy and be bar-shaped hard mutually 4, the A3 steel is the composite wear-resistant foreplate of parent metal 3.
Certainly, according to actual needs, alloy powder also can be selected the mixture of high-carbon chromium iron and molybdenum-iron powder, ferrotungsten powder, ferrosilicon powder, ferromanganese powder.
Embodiment 2: the preparation tungsten carbide is that hard phase, A3 steel are the bar-shaped composite wear-resistant foreplate of matrix
1, it is bundled to select for use the alloy powder core bar 1 of 5mm diameter to roll, and the alloy powder of packing in the alloy powder core bar 1 is the diamondite powder, and granularity 150 orders are cut into the length identical with foreplate thickness;
2, adopt resin sand to require to make guide plate casting mold 2 according to casting technique;
3, with alloy powder core bar 1 according to 40% the ratio that accounts for the wear-resistant foreplate volume, be preset in the wear-resistant foreplate casting mold die cavity;
4, select for use the A3 steel as parent metal 3, after intermediate frequency furnace smelting fusing, reach 1600 ℃ and come out of the stove, molten steel is poured in the die cavity of guide plate casting mold 2, till filling with;
5, room temperature cooling, treat the molten metal cooled and solidified after, take out foundry goods, sand removal is handled, promptly make tungsten carbide and be bar-shaped hard mutually 4, the A3 structure of steel is the composite wear-resistant foreplate of matrix 3.
Embodiment 3: the preparation tungsten carbide is that hard phase, potassium steel are the bar-shaped composite wear-resistant foreplate of matrix
1, it is bundled to select for use the alloy powder core bar 1 of 3mm diameter to roll, and the alloy powder of packing in the alloy powder core bar 1 is the diamondite powder, and granularity 50～80 orders are cut into the length identical with foreplate thickness;
2, adopt resin sand to require to make guide plate casting mold 2 according to casting technique;
3, with alloy powder core bar 1 according to 60% the ratio that accounts for the wear-resistant foreplate volume, be preset in the wear-resistant foreplate casting mold die cavity;
4, select for use potassium steel Mn13 as parent metal 3, after intermediate frequency furnace smelting fusing, reach 1650 ℃ and come out of the stove, molten steel is poured in the die cavity of guide plate casting mold 2, till filling with;
5, room temperature cooling, treat the molten metal cooled and solidified after, take out foundry goods, sand removal is handled, promptly make tungsten carbide and be bar-shaped hard mutually 4, potassium steel is organized as the composite wear-resistant foreplate of matrix 3.
In the foregoing description 2,3, according to different demands, alloy powder can also be selected one or more mixtures in carborundum, titanium carbide, aluminium oxide, silicon nitride or the titanium nitride powder.
In the foregoing description, according to different demands, parent metal 3 can also be selected grey cast-iron or spheroidal graphite cast-iron, all can make qualified complex abrasion-proof guide plate.
Claims (7)
1, a kind of preparation method of complex abrasion-proof guide plate, it is characterized in that, this method is rolled the alloy powder core bar bundled, be arranged in the die cavity of guide plate casting mold, alloy powder core bar bundle accounts for 20%～60% of guide plate cumulative volume, then the parent metal liquid of fusing is poured in the casting mold die cavity of guide plate, under the heat effect of parent metal, the alloy powder core bar melts, dissolving, a large amount of alloying elements and parent metal liquid in the alloy powder core bar produce metallurgical combination reaction, generate highly dispersed alloy structure in position, last cooled and solidified forms bar-shaped hard and combines with the transition of parent metal metallurgy and combine together, and the metal made from high-toughness high-strength is a matrix, include the complex abrasion-proof guide plate of bar-shaped high rigidity particle of the metallurgical binding of some.
2. the method for claim 1 is characterized in that, described alloy powder core bar is diameter of phi 1mm～Φ 10mm, and it is 50 orders～200 purpose alloy powders that the low carbon steel pipe of wall thickness 0.1～1.0mm, core are filled with granularity.
3. method as claimed in claim 2 is characterized in that, described alloy powder is one or more mixtures in tungsten carbide, carborundum, titanium carbide, aluminium oxide, silicon nitride or the titanium nitride powder.
4. method as claimed in claim 2 is characterized in that, described alloy powder is a high-carbon chromium iron, or the mixture of high-carbon chromium iron and molybdenum-iron powder, ferrotungsten powder, ferrosilicon powder, ferromanganese powder.
5, the method for claim 1 is characterized in that, described parent metal is cast steel or cast iron.
6, method as claimed in claim 5 is characterized in that, described cast steel is potassium steel, mild steel or steel alloy.
7, method as claimed in claim 5 is characterized in that, described cast iron is grey cast-iron or spheroidal graphite cast-iron.
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| CNA2008102324974A CN101412095A (en) | 2008-11-28 | 2008-11-28 | Method for preparing composite wear-resistant foreplate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898239A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Method for preparing ceramic particle reinforcement of composite wear-resistant material |
| CN101898238A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Ceramic particle reinforced composite wear-resistant part and preparation method thereof |
| CN102233422A (en) * | 2011-05-11 | 2011-11-09 | 昆明理工大学 | Composite guide plate and preparation process thereof |
| CN105583240A (en) * | 2014-11-14 | 2016-05-18 | 南京高精工程设备有限公司 | Manufacturing method capable of prolonging service life of guide plate |
| CN106311769A (en) * | 2016-08-19 | 2017-01-11 | 合肥东方节能科技股份有限公司 | Manufacturing method for native hard multiphase composite guide roller |
| CN113814377A (en) * | 2021-09-16 | 2021-12-21 | 安徽鑫宏机械有限公司 | Production method of high-strength guide plate |
-
2008
- 2008-11-28 CN CNA2008102324974A patent/CN101412095A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898239A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Method for preparing ceramic particle reinforcement of composite wear-resistant material |
| CN101898238A (en) * | 2010-07-23 | 2010-12-01 | 西安交通大学 | Ceramic particle reinforced composite wear-resistant part and preparation method thereof |
| CN102233422A (en) * | 2011-05-11 | 2011-11-09 | 昆明理工大学 | Composite guide plate and preparation process thereof |
| CN105583240A (en) * | 2014-11-14 | 2016-05-18 | 南京高精工程设备有限公司 | Manufacturing method capable of prolonging service life of guide plate |
| CN105583240B (en) * | 2014-11-14 | 2018-08-14 | 南京高精工程设备有限公司 | A kind of manufacturing method extending guide plate service life |
| CN106311769A (en) * | 2016-08-19 | 2017-01-11 | 合肥东方节能科技股份有限公司 | Manufacturing method for native hard multiphase composite guide roller |
| CN106311769B (en) * | 2016-08-19 | 2018-01-05 | 合肥东方节能科技股份有限公司 | A kind of preparation method of primary hard multiphase composite Roll Collar |
| CN113814377A (en) * | 2021-09-16 | 2021-12-21 | 安徽鑫宏机械有限公司 | Production method of high-strength guide plate |
| CN113814377B (en) * | 2021-09-16 | 2023-11-07 | 安徽鑫宏机械有限公司 | Production method of high-strength guide plate |
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Open date: 20090422 |