CN102051557B - High chromium cast iron-high manganese steel composite liner plate and manufacturing method thereof - Google Patents
High chromium cast iron-high manganese steel composite liner plate and manufacturing method thereof Download PDFInfo
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- CN102051557B CN102051557B CN2010105835428A CN201010583542A CN102051557B CN 102051557 B CN102051557 B CN 102051557B CN 2010105835428 A CN2010105835428 A CN 2010105835428A CN 201010583542 A CN201010583542 A CN 201010583542A CN 102051557 B CN102051557 B CN 102051557B
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- manganese steel
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Abstract
The invention relates to a high chromium cast iron-high manganese steel composite liner plate. The high chromium cast iron-high manganese steel composite liner plate is a metal plate which has the structure that a low-carbon high manganese steel wire mesh is embedded in high chromium cast iron. The manufacturing method mainly comprises the following steps: knitting a wire mesh by using low-carbon high manganese steel wires; putting the wire mesh in a 1-3% hydrochloric acid tank at room temperature, soaking for 5-10 minutes, taking out, and naturally drying in the air; putting the low-carbon high manganese steel wire mesh in a casting mold cavity, and casting a composite liner plate according to a conventional casting technique of high chromium cast iron; and heating the high chromium cast iron-high manganese steel composite liner plate to 1000-1100 DEG C, keeping the temperature for 3-5 hours, putting the high chromium cast iron-high manganese steel composite liner plate in a quenching oil at room temperature so as to cool the high chromium cast iron-high manganese steel composite liner plate to room temperature, heating the high chromium cast iron-high manganese steel composite liner plate to 250-320 DEG C, keeping the temperature for 4-6 hours, and cooling in the air to room temperature. The high chromium cast iron-high manganese steel composite liner plate provided by the invention has the advantages of high hardness [higher than HRC (Rockwell hardness) 65], favorable toughness (higher than 30J/cm<2>), excellent wear resistance and favorable shock resistance. The manufacturing method of the high chromium cast iron-high manganese steel composite liner plate is simple, and has the advantages of high yield and stable performance.
Description
Technical field the present invention relates to a kind of metal-base composites and manufacturing approach thereof, particularly rich chromium cast iron composite and manufacturing approach thereof.
The background technology rich chromium cast iron is because the hardness height has been proved to be one of classic high-abrasive material.In the mine, sector applications such as cement, electric power, building materials and metallurgy very extensively.This is because the tissue of rich chromium cast iron is made up of matrix and hard point, and hard point is given prominence to working surface, is bearing the task of main opposing wearing and tearing, and matrix then provides support to the hard point and protects.But crisp, hard carbide has weakened the shock proof ability of rich chromium cast iron foundry goods matrix in the rich chromium cast iron, and its application under middle and high shock loading condition is restricted, and the toughness that therefore improves rich chromium cast iron is the target that the researcher pursues for many years always.Around this problem; Done a large amount of work both at home and abroad; Its common ground is to attempt to change the shape of eutectic carbide, waits the toughness that improves rich chromium cast iron through changing aspects such as graphite form in the cast iron, refining eutectic carbide, raising crystal boundary metallurgical quality, choose reasonable matrix.From present result of study, the impact toughness of rich chromium cast iron is generally at 3-6J/cm
2Even, dose the noble element that rare earth, titanium, nickel etc. improve toughness in a large number, its toughness does not have raising by a relatively large margin yet.Therefore; In order effectively to improve the toughness of rich chromium cast iron, in recent years, the composite of some rich chromium cast irons and other material has appearred; Wherein, Mainly being rich chromium cast iron and mild steel composite, is the patent of CN1099075A like publication number, and a kind of rich chromium cast iron/mild steel wire composite abrasion resistance material is provided.Yet, because the fusing point higher (about 1520 ℃) of mild steel, and rich chromium cast iron fusing point itself lower (about 1230 ℃), both defective usually occurs fusing, and success rate is reduced.Simultaneously, because after mild steel and the rich chromium cast iron fusion, it is organized as pearlite, the general (25J/cm of toughness
2About), therefore, it is not a lot of that the toughness of this composite improves with respect to rich chromium cast iron.
Summary of the invention the object of the present invention is to provide a kind of rich chromium cast iron-potassium steel composite liner and manufacturing approach thereof that has high rigidity and high tenacity concurrently.The present invention mainly is: composite liner is the metallic plate that is inlaid with the low-carbon high-manganese steel wire in the rich chromium cast iron; Its preparation method is: the low-carbon high-manganese steel wire is placed in the abrasion-proof backing block casting mold die cavity, again with the rich chromium cast iron molten iron pouring in die cavity, then foundry goods is carried out oil quenching and lonneal and handles.
Technical scheme of the present invention is following:
Rich chromium cast iron of the present invention-potassium steel composite liner is the metallic plate that is inlaid with the low-carbon high-manganese steel wire in the rich chromium cast iron; Preferably the steel wire diameter of this potassium steel steel wire is Φ 2-3mm, and grid is the square of length of side 30-40mm, whole silk screen undulate, and the distance between its crest and the trough is 10-20mm.
The preparation method of above-mentioned rich chromium cast iron-potassium steel composite liner is following:
1, with low-carbon high-manganese braided steel wire silk screen, preferably the chemical composition of steel wire is (percentage by weight): C0.5-0.8, Mn 12.0-14.0, and all the other are iron and total amount less than 0.5% impurity.
2, above-mentioned silk screen is carried out surface activation process with the low concentration acid solution, being about to silk screen, to put into the concentration of room temperature be the salt acid tank of 1-3%, soaked 5-10 minute, takes out air dry in air then.
3, above-mentioned low-carbon high-manganese steel wire is placed in the casting mold die cavity, presses the conventional casting casting composite liner plate of rich chromium cast iron.The chemical composition of rich chromium cast iron is (wt%): C 2.5-3.5, and Cr 25.1-28.0, W2.0-3.0, Ni 2.1-3.0, Re-Mg 1.0-3.0, Si＜0.5, P＜0.04, S＜0.04, all the other are iron.
4, above-mentioned rich chromium cast iron-potassium steel composite liner is heated to 1000-1100 ℃, is incubated after 3-5 hour, put into the quenching oil cool to room temperature of room temperature; Then liner plate is heated to 250-320 ℃ of insulation after 4-6 hour again, air cooling is to room temperature.The metallic plate that final acquisition low-carbon high-manganese steel wire and outside rich chromium cast iron fuse together.
The present invention compared with prior art has the following advantages:
1, the composite of rich chromium cast iron of the present invention and potassium steel, the fusing point of potassium steel are about 1360 ℃, and be suitable with the fusing point (about 1230 ℃) of rich chromium cast iron, and both are easier to be fused together when casting.
2, netted low-carbon high-manganese steel and rich chromium cast iron metallurgical melting together, rich chromium cast iron has higher hardness (more than the HRC65), and the fine (200J/cm of low-carbon high-manganese steel toughness
2More than), both mutual supplement with each other's advantages makes composite abrasion-proof inner plate have excellent wear-resisting and shock resistance, has avoided rich chromium cast iron foundry goods embrittlement phenomenon in use, and improve 80～600% than like product service life.
3, this composite liner manufacturing process is simple, yield rate is high, stable performance, can be widely used in making the wear-resisting spare part of industries such as mine, coal, building materials and metallurgy.
Description of drawings
Fig. 1 is that rich chromium cast iron-potassium steel composite liner master looks sectional schematic diagram.
Fig. 2 is that sketch map cuts open in the three-dimensional office of rich chromium cast iron-potassium steel composite liner.
The specific embodiment
In the sketch map of rich chromium cast iron illustrated in figures 1 and 2-potassium steel composite liner, rich chromium cast iron-potassium steel composite liner is the metallic plate that is inlaid with low-carbon high-manganese steel wire 1 in the rich chromium cast iron 2; The steel wire diameter of this potassium steel steel wire is Φ 2-3mm, and grid is the square of length of side 30-40mm, and whole silk screen undulate, and the distance between its crest and the trough is 10-20mm.
Embodiment 1:
Use diameter to weave into silk screen as the low-carbon high-manganese steel wire of Φ 3mm, the chemical composition of steel wire (wt%) be C0.58 and Mn12.1, all the other for iron and total amount less than 0.5% impurity.The silk screen grid is the square of length of side 30mm, the silk screen undulate, and the distance between its crest and the trough is 12mm.The concentration that above-mentioned low-carbon high-manganese steel wire is put into room temperature is that 3% salt acid tank soaks 5min and carries out activation processing, takes out air dry in air then.Again above-mentioned silk screen is put into casting mold cavity; With chemical composition (wt%) is C 3.4, Cr 28.0, W 2.8, Ni 2.2, Re-Mg 1.3; The rich chromium cast iron water of Si 0.45, P 0.038, S 0.022; Conventional casting by rich chromium cast iron is poured into a mould, and obtains being of a size of the casting composite liner plate of 200mm * 300mm * 20mm.Above-mentioned rich chromium cast iron/potassium steel compound casting liner plate is heated to 1030 ℃, is incubated after 3.5 hours, put into the quenching oil cool to room temperature of room temperature; Then liner plate is heated to 310 ℃ of insulations after 5 hours again, air cooling is to room temperature.Final low-carbon high-manganese steel wire and the fused metallic plate together of outside rich chromium cast iron of obtaining.Above-mentioned composite liner uses in the equipment of harbour, Qinhuangdao conveying ore system, and compares with famous Sweden's Hardox500 liner plate, and improve 80% than Hardox500 liner plate the service life of this composite abrasion-proof inner plate of result, obtains good result of use.
Embodiment 2:
Use diameter dimension to weave into silk screen as the low-carbon high-manganese steel wire of Φ 2mm, the chemical composition of steel wire (wt%) be C0.77 and Mn13.8, all the other for iron and total amount less than 0.5% impurity.The silk screen grid is the square of length of side 35mm, the silk screen undulate, and the distance between its crest and the trough is 20mm.The concentration that above-mentioned low-carbon high-manganese steel wire is put into room temperature is that 1.5% salt acid tank soaks 10min and carries out activation processing, takes out air dry in air then.Again above-mentioned silk screen is put into casting mold cavity; With chemical composition (wt%) is C 2.8, Cr25.8, W 2.1, Ni 2.5, Re-Mg 2.0; The rich chromium cast iron water of Si 0.4, P 0.03, S 0.04; Conventional casting by rich chromium cast iron is poured into a mould, and obtains being of a size of the casting composite liner plate of 400mm * 400mm * 30mm.Rich chromium cast iron/potassium steel compound casting liner plate is heated to 1050 ℃, is incubated after 5 hours, put into the quenching oil cool to room temperature of room temperature; Then liner plate is heated to 300 ℃ of insulations after 4.5 hours again, air cooling is to room temperature.Final low-carbon high-manganese steel wire and the fused metallic plate together of outside rich chromium cast iron of obtaining.Above-mentioned composite liner uses in the equipment of harbour, Huanghua conveying coal system, and compares with 16Mn steel plate liner plate, and improve 6 times than 16Mn steel plate liner plate the service life of this composite abrasion-proof inner plate of result, obtains good result of use.
Embodiment 3: use diameter dimension to weave into silk screen as the low-carbon high-manganese steel wire of Φ 3mm, the chemical composition of steel wire (wt%) be C0.7 and Mn13.1, all the other for iron and total amount less than 0.5% impurity.The silk screen grid is the square of length of side 35mm, the silk screen undulate, and the distance between its crest and the trough is 15mm.The concentration that above-mentioned low-carbon high-manganese steel wire is put into room temperature is that 2% salt acid tank soaks 8min and carries out activation processing, takes out air dry in air then.Again above-mentioned silk screen is put into casting mold cavity; With chemical composition (wt%) is C 3.1, Cr 26.5, W 2.5, Ni 2.9, Re-Mg 2.7; The rich chromium cast iron water of Si 0.33, P 0.038, S 0.037; Conventional casting by rich chromium cast iron is poured into a mould, and obtains being of a size of the casting composite liner plate of 200mm * 200mm * 25mm.Rich chromium cast iron/potassium steel compound casting liner plate is heated to 1080 ℃, is incubated after 4 hours, put into the quenching oil cool to room temperature of room temperature; Then liner plate is heated to 260 ℃ of insulations after 6 hours again, air cooling is to room temperature.Final low-carbon high-manganese steel wire and the fused metallic plate together of outside rich chromium cast iron of obtaining.Above-mentioned composite liner uses in the ball mill of manufacture of cement factory, and compares with casting potassium steel (ZGMn13) liner plate, and improve 2.2 times than ZGMn13 steel liner plate the service life of this composite abrasion-proof inner plate of result, obtains good result of use.
Claims (3)
1. rich chromium cast iron-potassium steel composite liner is characterized in that: this composite liner is that the percentage by weight in chemical composition is C 2.5-3.5, Cr 25.1-28.0; W 2.0-3.0, Ni 2.1-3.0, Re-Mg1.0-3.0; Si＜0.5; P＜0.04, S＜0.04, all the other are C 0.5-0.8 for the percentage by weight that is inlaid with chemical composition in the rich chromium cast iron of iron; Mn 12.0-14.0, all the other are iron and total amount whole silk screen undulate and the crest of silk screen and the metallic plate of the low-carbon high-manganese steel wire that the distance between the trough is 10-20mm less than 0.5% impurity.
2. rich chromium cast iron according to claim 1-potassium steel composite liner is characterized in that: the steel wire diameter of its potassium steel steel wire is Φ 2-3mm, and grid is the square of length of side 30-40mm.
3. aforesaid right requires the manufacturing approach of rich chromium cast iron-potassium steel composite liner of 1, it is characterized in that:
(1) with low-carbon high-manganese braided steel wire silk screen,
(2) concentration of silk screen being put into room temperature is the salt acid tank of 1-3%, soaks 5-10 minute, takes out air dry in air,
(3) above-mentioned low-carbon high-manganese steel wire is placed in the casting mold die cavity, presses the conventional casting casting composite liner plate of rich chromium cast iron,
(4) above-mentioned rich chromium cast iron-potassium steel composite liner is heated to 1000-1100 ℃, is incubated after 3-5 hour, put into the quenching oil cool to room temperature of room temperature, and then liner plate is heated to 250-320 ℃ of insulation after 4-6 hour again, air cooling is to room temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105835428A CN102051557B (en) | 2010-12-10 | 2010-12-10 | High chromium cast iron-high manganese steel composite liner plate and manufacturing method thereof |
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| CN2010105835428A CN102051557B (en) | 2010-12-10 | 2010-12-10 | High chromium cast iron-high manganese steel composite liner plate and manufacturing method thereof |
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| CN102051557A CN102051557A (en) | 2011-05-11 |
| CN102051557B true CN102051557B (en) | 2012-11-21 |
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| CN102303212B (en) * | 2011-06-24 | 2013-04-10 | 成都申信达机械有限公司 | Process for manufacturing lining board of wet-spraying machine |
| CN104087848B (en) * | 2014-06-26 | 2016-05-18 | 宁国市正兴耐磨材料有限公司 | A kind of compound abrasion-proof backing block |
| CN104098045B (en) * | 2014-07-10 | 2016-06-08 | 安徽通润汽车零部件有限公司 | The preparation method of a kind of hydraulic jack lifting beam |
| CN106555927A (en) * | 2015-09-29 | 2017-04-05 | 廖树汉 | The string ripple foam web steel plate lighter than water |
| CN106555925A (en) * | 2015-09-29 | 2017-04-05 | 廖树汉 | The light company's bubble foam web steel plate of resistance Lapie's water |
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| CN106555924A (en) * | 2015-09-29 | 2017-04-05 | 廖树汉 | The light connecting leg foam web steel plate of resistance Lapie's water |
| CN110077878B (en) * | 2019-03-28 | 2020-11-03 | 无锡市广润金属制品有限公司 | GR460 hot-dip galvanized steel strip |
| CN114395666A (en) * | 2021-12-31 | 2022-04-26 | 安徽华聚新材料有限公司 | Quenching process of bimetal composite lining plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2579515Y (en) * | 2002-09-29 | 2003-10-15 | 河南科技大学 | Double metal composite jaw plate |
| CN2765769Y (en) * | 2005-01-19 | 2006-03-22 | 江苏明雨耐磨材料有限公司 | High-chromium alloy foundry iron thin wall composite scaleboard |
| CN2845911Y (en) * | 2005-11-14 | 2006-12-13 | 沈阳重型机械集团有限责任公司 | Composite lining board for vertical roller grinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52103324A (en) * | 1976-02-26 | 1977-08-30 | Kawasaki Heavy Ind Ltd | Compound material of antiiabrasion and shockkresisting |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2579515Y (en) * | 2002-09-29 | 2003-10-15 | 河南科技大学 | Double metal composite jaw plate |
| CN2765769Y (en) * | 2005-01-19 | 2006-03-22 | 江苏明雨耐磨材料有限公司 | High-chromium alloy foundry iron thin wall composite scaleboard |
| CN2845911Y (en) * | 2005-11-14 | 2006-12-13 | 沈阳重型机械集团有限责任公司 | Composite lining board for vertical roller grinder |
Non-Patent Citations (1)
| Title |
|---|
| JP昭52-103324 1977.12.08 |
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