CN101412104A - Method for preparing primary column shaped horniness phase composite wear-resistant grinder dish - Google Patents
Method for preparing primary column shaped horniness phase composite wear-resistant grinder dish Download PDFInfo
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- CN101412104A CN101412104A CNA2008102325676A CN200810232567A CN101412104A CN 101412104 A CN101412104 A CN 101412104A CN A2008102325676 A CNA2008102325676 A CN A2008102325676A CN 200810232567 A CN200810232567 A CN 200810232567A CN 101412104 A CN101412104 A CN 101412104A
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Abstract
The invention discloses a method for preparing a composite wear resistant abrasive disk with a protogenous columnar hard phase. The wear resistant abrasive disk prepared by the method is formed by pouring and compounding a high hardness columnar alloy hard phase and a high tenacity base metal. The method comprises the following steps: weaving an alloy powder core wire material into a framework similar to the shape of the abrasive disk, and pouring smelted high temperature base material molten steel into a die cavity of an abrasive disk casting mould; putting the woven framework similar to the shape of the abrasive disk into the casting die cavity filled with the high temperature base metal molten steel quickly, performing cast-infiltration, sintering or melting on the woven alloy powder core wire material framework by using the heat of the high temperature base metal molten steel so as to generate a highly-dispersed high hardness columnar alloy hard phase in situ; and cooling the phase at room temperature to produce the composite wear resistant abrasive disk using high-tenacity and high-strength metal as a base and containing the metallurgically-combined protogenous columnar hard phase. The composite wear resistant abrasive disk with the protogenous columnar hard phase has ultra wear resistance and good impact resistant toughness, and the service life of the abrasive disk is close to or exceeds the imported products of the same type.
Description
Technical field
The present invention relates to the preparation of mill, be particularly related to a kind of preparation method of primary column shaped horniness phase composite wear-resistant grinder dish, the primary column shaped horniness phase composite wear-resistant grinder dish that this method is made, by primary column shaped horniness mutually with the high-toughness metal matrix mutually two parts form, high strength and high tenacity with parent metal, the high rigidity and the high-wearing feature that have the hard phase again can be born high pressure and strong wear simultaneously.
Background technology
Mill is a kind of grinding tool on the grinder, mainly uses in the Vertical Mill of departments such as electric power, mine, cement, chemical industry, coal, is used for the grinding of coal, ore, cement life/grog etc.The wearability of mill and toughness directly influence its service life.The current material that is used to make mill is mainly materials such as high-alloy steel and cast iron: though high-alloy steel has good toughness, hardness is lower, so abrasion resistance is poor, and has adopted the very expensive rare alloy element of price, so product cost is also high; And the employing cast iron materials though wearability is guaranteed, is studied carefully the disadvantage of its poor toughness, in the use of being everlasting brittle fracture takes place, and causes manufacturing enterprise's stop work and production.Though also have some composites to be used to make the grinding machine mill, do not reach good result of use yet.
Summary of the invention
Defective or deficiency at above-mentioned prior art existence, the objective of the invention is to, a kind of preparation method of primary column shaped horniness phase composite wear-resistant grinder dish is provided, the column shaped horniness phase composite wear-resistant grinder dish of this method preparation, by alloy powder core being carried out the hard phase of the compound generation high abrasion of original position, and hard has been realized metallurgical binding with high tenacity matrix boundary, has high-wearing feature and high tenacity, has solved the technical barrier that the wearability that exists in the present industry and toughness are difficult to be in harmonious proportion.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of preparation method of primary column shaped horniness phase composite wear-resistant grinder dish is characterized in that, the wear-resisting mill that this method makes is composited by casting by high rigidity column alloy hard phase and high tenacity parent metal two parts, specifically comprises the following steps:
Step 1 is compiled into approximate mill shape skeleton with the alloyed powder core-wire material, and carries out overall fixed by the method for colligation and welding, and mill shape skeleton accounts for 50%～80% of actual mill cumulative volume;
Step 4, room temperature cooling, treat the molten metal cooled and solidified after, the high rigidity column alloy hard that generates combines with the metallurgical transition of parent metal and combines together, take out foundry goods, sand removal is handled, and to make metal with high-toughness high-strength be matrix, include the complex abrasion-proof mill of metallurgical binding.
Adopt the primary column shaped horniness phase composite wear-resistant grinder dish of method preparation of the present invention to have the following advantages:
1, owing to adopt the alloyed powder core-wire material, inner filler alloys powder, under the high temperature action of parent metal liquid, alloy powder sintering in the alloyed powder core-wire material, 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 make alloying element enrichment in position, the hard compounds of the high rigidity of a large amount of disperses is separated out in the remarkable refinement of crystal grain, has just formed the hard phase that is column/ribbon on the macroscopic view that is embedded in the parent metal after solidifying, and form the excellent metallurgical transition with parent metal and combine, the interface has solved hard and has come off mutually in conjunction with firmly, a cracked difficult problem, wearability and toughness organic unity, can avoid fatigue wear effectively, and composite tensile property and compressive property are good.The overall performance of the complex abrasion-proof mill of method preparation of the present invention is good, significantly is better than the mill (or compound mill) of steel alloy, cast iron and ceramic material.
2, alloy powder can carry out proportioning according to the instructions for use of workpiece, and composition is adjustable, wide adaptability.
3, because the alloyed powder core-wire material does not contain impurity such as binding agent, therefore can not produce defectives such as slag inclusion pore, the interior tissue function admirable obviously is better than the institutional framework that general powder metallurgy process prepares wearing composite material.
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 is that whole reaction in-situ generates mutually, and boundary reaches metallurgical binding, and material structure densification and no significant defect have been avoided the cracking phenomena that occurs as combined polishing disc and the obscission in the use in process of lapping.
6, according to the use industrial and mineral, the adjustable ratio of column shaped horniness in matrix, and, be easy to the silk material skeleton that mechanization is compiled into different shape and is evenly distributed because alloyed powder core-wire material flexibility is good;
7, according to different instructions for uses, can adjust the diameter and the distribution form of column shaped horniness phase, alloyed powder core-wire material diameter can be from the millimeter level to the micron order adjustment, obtains that Tissue distribution is more even, anti-wear performance good quality production more;
8, mill (or the compound mill) life-span that its service life, comparable high-alloy steel, cast iron or ceramic material were made is improved 5-10 doubly.
Description of drawings
Fig. 1 is an alloy powder core silk equipment structure schematic diagram;
Fig. 2 is a column shaped horniness phase composite wear-resistant grinder dish preparation technology schematic diagram;
Fig. 3 obtains the schematic diagram of wear-resisting compound mill through casting;
Fig. 4 is the partial enlarged drawing of A among Fig. 3;
Fig. 5 is the metallographic structure figure of mill wearing composite material;
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 alloyed powder core-wire material 3 of preparation certain diameter and alloy powder proportioning is woven into approximate mill shape skeleton 4 with certain size and a certain proportion of alloy core-wire material 3, and by the method for colligation or welding mill shape skeleton 4 is fixed.
Adopt resin sand to require to make mill casting mold 5 according to casting technique;
The molten steel of the parent metal 6 of 1600 ℃ of high temperature melting is poured in the die cavity of mill casting mold 5, fast mill shape skeleton 4 is inserted in the die cavity of mill casting mold 5 then, under the heat effect of high temperature parent metal molten steel, alloyed powder core-wire material 3 melts, sintering, moltenly ooze even dissolve, a large amount of alloying elements and high temperature parent metal molten steel in the alloyed powder core-wire material 3 produce metallurgical combination reaction, the alloyed powder metallic element carries out short-range diffusion in the parent metal molten steel, generate in position to be evenly distributed and the high rigidity column shaped horniness of realization and high temperature parent metal metallurgical binding mutually 8;
The room temperature cooling, after treating the molten metal cooled and solidified, the high rigidity column alloy hard of generation mutually 8 combines with parent metal 6 metallurgical transition and to combine the taking-up foundry goods together, sand removal is handled, and to make metal with high-toughness high-strength be matrix, include the primary column shaped horniness phase composite wear-resistant grinder dish of metallurgical binding.
The diameter range Φ 2mm～10mm of alloyed powder core-wire material 3, the wall thickness of the low carbon steel pipe skin 2 of parcel alloy powder 1 is 0.1mm～1mm; Alloy powder 1 granularity of alloyed powder core-wire material 3 cores dress is 50 orders～300 orders (Fig. 1), also alloyed powder core-wire material 3 can be made the compacting band and use.
The alloy powder of above-mentioned alloyed powder core-wire material 3 cores 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 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, but the present invention is not limited to following examples.
Embodiment 1: the preparation high-chromium alloy is that hard phase, A3 steel are the banded composite wear-resistant roller of matrix
1, alloyed powder 1 is wrapped in the low carbon steel pipe skin 2, forms alloyed powder core-wire material 3; Selecting sectional dimension for use is the alloyed powder core-wire material 3 of Φ 3mm, and alloy powder is a high-carbon chromium iron, granularity 100 orders～150 orders;
2, the alloy core-wire material is woven into approximate mill shape skeleton 4, and skeleton is fixed by the method for colligation or welding;
3, adopt resin sand to require to make mill casting mold 5 according to casting technique;
4, select for use the A3 steel as parent metal 6, smelt fusing with intermediate frequency furnace after, reach 1600 ℃ and come out of the stove, molten steel is poured into from running channel 7 in the die cavity of mill casting mold 5 (Fig. 2);
5, in the die cavity with mill shape skeleton 4 whole insertion mill casting molds 5, under the heat effect of high temperature parent metal molten steel, alloyed powder core-wire material 3 melts, sintering, moltenly ooze even dissolve, a large amount of alloying elements and high temperature parent metal molten steel in the alloyed powder core-wire material 3 produce metallurgical combination reaction, the alloyed powder metallic element carries out short-range diffusion in the parent metal molten steel, generate in position to be evenly distributed and the high rigidity column shaped horniness of realization and high temperature parent metal metallurgical binding mutually 8;
Room temperature cooling then, treat the molten metal cooled and solidified after, take out foundry goods, sand removal is handled, promptly make high-chromium alloy and be column shaped horniness mutually 8, the A3 steel is the complex abrasion-proof mill (as shown in Figure 3, the thin portion in the A place architectural feature among Fig. 3 as shown in Figure 4) of parent metal 6.
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.
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 mill.
The metallographic structure figure of the mill wearing composite material of the present invention's preparation as shown in Figure 5, high strength and high tenacity with parent metal, the high rigidity and the high-wearing feature that have the hard phase again, can bear high pressure and strong wear simultaneously, its service life near or surpass similar imported product, and price only is the 1/3-1/2 of imported product, the cost performance height, and mill (or the compound mill) life-span of making than high-alloy steel, cast iron or ceramic material is improved 5-10 doubly.Can be applying unit and bring remarkable economic efficiency.
Claims (7)
1, a kind of preparation method of primary column shaped horniness phase composite wear-resistant grinder dish is characterized in that, the wear-resisting mill that this method makes is composited by casting by high rigidity column alloy hard phase and high tenacity parent metal two parts, specifically comprises the following steps:
Step 1 is compiled into approximate mill shape skeleton with the alloyed powder core-wire material, and carries out overall fixed by the method for colligation and welding, and mill shape skeleton accounts for 50%～80% of actual mill cumulative volume;
Step 2 adopts resin sand to require to make the mill casting mold according to casting technique;
Step 3 pours into the high temperature parent metal molten steel of smelting fusing in the die cavity of mill casting mold; Fast the mill shape skeleton of establishment is put into the casting die cavity that is filled with high temperature parent metal molten steel, utilize the heat of high temperature parent metal molten steel, the alloyed powder core-wire material skeleton of establishment cast ooze, sintering or dissolve, alloying element in the alloyed powder core-wire material carries out short-range diffusion under high temperature parent metal molten steel heat, generate highly dispersed high rigidity column alloy hard phase in position;
Step 4, room temperature cooling, treat the molten metal cooled and solidified after, the high rigidity column alloy hard that generates combines with the metallurgical transition of parent metal and combines together, take out foundry goods, sand removal is handled, and to make metal with high-toughness high-strength be matrix, include the complex abrasion-proof mill of metallurgical binding.
2, the method for claim 1, it is characterized in that, the diameter range Φ 2mm～10mm of described alloyed powder core-wire material, the low carbon steel pipe skin wall thickness of parcel alloy powder is 0.1mm～1mm, the core of alloyed powder core-wire material is filled with alloy powder, and granularity is 50 orders～300 orders.
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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| CNA2008102325676A CN101412104A (en) | 2008-12-03 | 2008-12-03 | Method for preparing primary column shaped horniness phase composite wear-resistant grinder dish |
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| CNA2008102325676A CN101412104A (en) | 2008-12-03 | 2008-12-03 | Method for preparing primary column shaped horniness phase composite wear-resistant grinder dish |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20120134A1 (en) * | 2012-07-25 | 2014-01-26 | F A R Fonderie Acciaierie Roiale S P A | PROCEDURE FOR THE MANUFACTURE OF STEEL JETS AND STEEL JETS SO MADE |
| CN104525898A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Guide plate and manufacturing method thereof |
| CN104525915A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Grinding disc and manufacturing method thereof |
| CN105709881A (en) * | 2014-12-02 | 2016-06-29 | 河北泰铭投资集团有限公司 | Multilayer composite superhigh-wear-resistant millstone tile and production method thereof |
| CN108057874A (en) * | 2016-10-31 | 2018-05-22 | 张志国 | A kind of three-dimensional network ceramic skeleton reinforcement metal-based compound refractory and preparation method thereof |
| CN109261294A (en) * | 2018-08-02 | 2019-01-25 | 宜昌船舶柴油机有限公司 | Grind the positioning tool and positioning location mode of roll sleeve outer surface wearable ceramic bar |
-
2008
- 2008-12-03 CN CNA2008102325676A patent/CN101412104A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20120134A1 (en) * | 2012-07-25 | 2014-01-26 | F A R Fonderie Acciaierie Roiale S P A | PROCEDURE FOR THE MANUFACTURE OF STEEL JETS AND STEEL JETS SO MADE |
| US20150290706A1 (en) * | 2012-07-25 | 2015-10-15 | F.A.R.-Fonderie Acciaierie Roiale-SPA | Method For Manufacturing Steel Casts and Steel Casts Thus Manufactured |
| EP2877305B1 (en) * | 2012-07-25 | 2020-12-23 | F.A.R. - Fonderie Acciaierie Roiale - SPA | Method for manufacturing steel casts and steel casts thus manufactured |
| CN104525898A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Guide plate and manufacturing method thereof |
| CN104525915A (en) * | 2014-11-18 | 2015-04-22 | 西安理工大学 | Grinding disc and manufacturing method thereof |
| CN104525915B (en) * | 2014-11-18 | 2017-02-22 | 西安理工大学 | Grinding disc and manufacturing method thereof |
| CN105709881A (en) * | 2014-12-02 | 2016-06-29 | 河北泰铭投资集团有限公司 | Multilayer composite superhigh-wear-resistant millstone tile and production method thereof |
| CN105709881B (en) * | 2014-12-02 | 2019-12-13 | 河北泰铭能源集团有限公司 | Nonmetal-metal static multilayer composite ultrahigh wear-resistant grinding disc tile and manufacturing method thereof |
| CN108057874A (en) * | 2016-10-31 | 2018-05-22 | 张志国 | A kind of three-dimensional network ceramic skeleton reinforcement metal-based compound refractory and preparation method thereof |
| CN109261294A (en) * | 2018-08-02 | 2019-01-25 | 宜昌船舶柴油机有限公司 | Grind the positioning tool and positioning location mode of roll sleeve outer surface wearable ceramic bar |
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Open date: 20090422 |