CN102071379A - High-strength gray cast iron material and preparation method thereof - Google Patents
High-strength gray cast iron material and preparation method thereof Download PDFInfo
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- CN102071379A CN102071379A CN 201110007474 CN201110007474A CN102071379A CN 102071379 A CN102071379 A CN 102071379A CN 201110007474 CN201110007474 CN 201110007474 CN 201110007474 A CN201110007474 A CN 201110007474A CN 102071379 A CN102071379 A CN 102071379A
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- steel wire
- mild steel
- grey cast
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- 239000000463 material Substances 0.000 title claims abstract description 60
- 229910001060 Gray iron Inorganic materials 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims abstract description 47
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 59
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 44
- 229910052759 nickel Inorganic materials 0.000 claims description 28
- 238000007747 plating Methods 0.000 claims description 22
- 229910052698 phosphorus Inorganic materials 0.000 claims description 20
- 229910052748 manganese Inorganic materials 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 4
- 229910003217 Ni3Si Inorganic materials 0.000 claims description 3
- 229910001037 White iron Inorganic materials 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007528 sand casting Methods 0.000 claims description 3
- 238000009776 industrial production Methods 0.000 abstract 1
- 229910000805 Pig iron Inorganic materials 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910005093 Ni3C Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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- Heat Treatment Of Steel (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention provides a high-strength gray cast iron material and a preparation method thereof. The high-strength gray cast iron material has good properties. The preparation method has the advantages of simple technique and low production cost, and is suitable for industrial production. The high-strength gray cast iron material uses gray cast iron as the matrix, low-carbon metal wire clews are distributed in the matrix, the diameter of the low-carbon steel wires is 1-2mm, and the low-carbon steel wires account for 5-35% of the high-strength gray cast iron material by volume, and the diameter of the metal wire clews is 10-15cm.
Description
Technical field
The invention belongs to metal material field, relate to a kind of high-strength grey cast iron material and preparation method thereof.
Background technology
In metal material field, grey cast iron is subjected to generally paying attention to as structured material always.
CN200510016878.5 number application relates to a kind of novel micro alloyed high strength grey cast iron.It carries out the microalloying processing by optimizing design of alloy with elements such as adding V, N, finally obtains the novel micro alloyed high strength grey cast iron with good tensile property and processing characteristics.Its weight percent composition is: C:2.92～3.48; Si:1.52～2.36; Mn:0.22～0.78; P:0.011～0.048; S:0.03～0.15; Cr:0.15～0.50; Cu:0.3～0.78; Sn:0.011～0.098; V:0～0.100; N:0～0.100.This invention has broken through at present and has added the problem that elements such as molybdenum, nickel carry out alloying for improving intensity in the world.It is big that but graphitic pig iron increases the difficulty of N.Although take to add elements such as V, Cu, Sn, yet also be limited to the intensity that improves material.
Summary of the invention
Purpose of the present invention is exactly at above-mentioned technological deficiency, and a kind of high-strength grey cast iron material is provided, and this material has good performance.
Another object of the present invention provides a kind of high-strength grey cast iron preparation methods, and this preparation method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to be achieved through the following technical solutions:
A kind of high-strength grey cast iron material, it is characterized in that: this material is a matrix with the grey cast iron, the wire group that in matrix, is distributing and forming by Mild Steel Wire, and used Mild Steel Wire diameter is 1-2mm, the diameter of wire group is 10-15cm, and the volume percent that Mild Steel Wire accounts for material is 5-35%;
The following chemical components in percentage by weight of described grey cast iron matrix: C is 2.7%～4.0%, and Si is 1.4%～2.5%, and Mn is 0.5-1.4%, and Zr is 0.5-2%, P＜0.08%, and S＜0.25%, all the other are Fe;
The following chemical components in percentage by weight of described Mild Steel Wire is: C is 0.05%～0.12%, and Si is 0.09%～0.3%, and Mn is 0.25-0.5%, P＜0.05%, and S＜0.045%, all the other are Fe.
Compound N i3C and Ni3Si particle are also distributing in the matrix.
A kind of high-strength grey cast iron preparation methods, it is characterized in that: it may further comprise the steps:
The preparation of nickel plating Mild Steel Wire: cut-off is directly for 1-2mm, composition weight percentage: C are 0.05%～0.12%, Si is 0.09%～0.3%, Mn 0.25-0.5%, P＜0.05%, S＜0.045%, all the other be the Mild Steel Wire of Fe, and controlling the volume percent that Mild Steel Wire accounts for material is 5-35%; At its plating nickel on surface, the thickness of nickel layer is the 50-500 micron according to a conventional method;
Ordinary method by cleaning ball production is made wire group with above-mentioned nickel plating Mild Steel Wire, wire group's diameter is 10-15cm, number of metal silk group is put into casting mold mo(u)ld bottom half die cavity, the tightness of wire group guarantees that by the volume percent decision that Mild Steel Wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, the molten iron cast is waited in the mould assembling back that finishes;
The preparation of grey cast iron material matrix: percentage composition C is 2.7%～4.0% by weight, Si is 1.4%～2.5%, Mn is that 0.5-1.4%, Zr are 0.5-2%, P＜0.08%, S＜0.25%, all the other prepare burden for the grey cast iron of Fe, the grey cast iron material melts in induction furnace, and temperature of fusion is 1450-1480 ℃;
Above-mentioned grey cast iron molten iron is poured into the dry sand casting mold that nickel plating low-carbon (LC) wire group is housed; Liquid molten iron surrounds the nickel plating Mild Steel Wire, cooled and solidified then, and forming with the white cast iron is the material that wherein is distributed with wire group of base.
The present invention's beneficial effect compared to existing technology is as follows:
1, Mild Steel Wire of the present invention self has suitable intensity and high toughness.The matrix of steel wire and graphitic pig iron all is an iron.Therefore steel wire and graphitic pig iron are easy to combine, and form good metallurgical binding.Like this, Mild Steel Wire is distributed in the fragility graphitic pig iron, and material is had good enhancing toughening effect.
2, after molten iron enters the casting mold die cavity and the nickel of Steel Wire Surface contacts, the nickel layer Ni of Steel Wire Surface is fused to molten iron, the Ni reaction of C in the molten iron and Si and Steel Wire Surface forms than higher C of cementite hardness and special compound Ni3Si and the Ni3C of Ni, is distributed in the matrix.These special compounds have further improved the intensity of material.
3, the Zr in the material of the present invention has the effect of remarkable refinement to the tissue of graphitic pig iron, for graphitic pig iron toughness reinforcing important effect is arranged.C and Zr also can form C and Zr compound (ZrC) in addition, are distributed in the raising that helps the strength of materials in the matrix of material.P, S are the impurity in the material, are controlled at the scope of permission.
4, material of the present invention need not valuable rare earth element, and the cost of material is low, and preparation technology is easy, and production cost is low, because take silk and compound particle to mix the enhancing mode, and alloy material intensity height, the good toughness produced, and be convenient to very much suitability for industrialized production.
Material property of the present invention sees Table 1.
Description of drawings
The metallographic structure of the high-strength grey cast iron material that Fig. 1 makes for the embodiment of the invention one.
Fig. 1 can see at grey cast iron and combining well with wire.
Embodiment
Below each embodiment only as explanation of the present invention, weight percent wherein all can change weight g, kg or other weight unit into.It is commercial that following diameter is that the Mild Steel Wire of 1-2mm is, and thickness is the nickel layer self-control of 50-500 micron.
Embodiment one:
The preparation of nickel plating Mild Steel Wire:
The weight percentage of the composition of Mild Steel Wire is: C is 0.05%, and Si is 0.09%, and Mn is 0.25%, P＜0.05%, and S＜0.045%, all the other are Fe.The volume percent that the control Mild Steel Wire accounts for material is 5%; This steel wire diameter is 1mm, and Mild Steel Wire is plating nickel on surface according to a conventional method, and nickel plating thickness is 50 microns.
Preparation process of the present invention is as follows:
Ordinary method by cleaning ball production is made wire group (formed wire is rolled into a ball moulding and can be made by the cleaning ball of of that washes the dishes or the method for title steel wire lump) with above-mentioned nickel plating Mild Steel Wire, wire group's diameter is 15cm, number of metal silk group is put into casting mold mo(u)ld bottom half die cavity, the tightness of wire group guarantees that by the volume percent decision that Mild Steel Wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, the molten iron cast is waited in the mould assembling back that finishes;
The preparation of grey cast iron material matrix: percentage composition C is 2.7% by weight, and Si is 1.4%, and Mn is 0.5%, Zr is 0.5%, P＜0.08%, S＜0.25%, all the other are prepared burden for the grey cast iron of Fe, and the grey cast iron material melts in induction furnace, and temperature of fusion is 1465-1475 ℃;
Above-mentioned grey cast iron molten iron is poured into the dry sand casting mold that nickel plating low-carbon (LC) wire group is housed; Liquid molten iron surrounds the nickel plating Mild Steel Wire, cooled and solidified then, and forming with the white cast iron is the material that wherein is distributed with wire group of base.
Embodiment two:
The grey cast iron matrix is percentage composition by weight: C is 4.0%, and Si is 2.5%, and Mn is 1.4%, and Zr is 2%, P＜0.08%, and S＜0.25%, all the other are prepared burden for Fe.
The composition weight percentage of Mild Steel Wire is: C is 0.12%, and Si is 0.3%, and Mn is 0.5%, P＜0.05%, and S＜0.045%, all the other are Fe.This steel wire diameter is 2mm, and the volume percent that Mild Steel Wire accounts for material is 35%; Mild Steel Wire is plating nickel on surface according to a conventional method, and nickel plating thickness is 500 microns.Press the ordinary method making wire group that cleaning ball is produced, wire group diameter is 10cm.
Its preparation process is with embodiment one.
Embodiment three:
The grey cast iron matrix is percentage composition by weight: C is 3%, and Si is 2%, and Mn is 0.9%, and Zr is 0.9%, P＜0.08%, and S＜0.25%, all the other are prepared burden for Fe.
The composition weight percentage of Mild Steel Wire is: C is 0.1%, and Si is 0.2%, and Mn is 0.4%, P＜0.05%, and S＜0.045%, all the other are Fe, and this steel wire diameter is 1.5mm, and the volume percent that Mild Steel Wire accounts for material is 20%; Mild Steel Wire plating nickel on surface, nickel plating thickness are 200 microns.Press the ordinary method making wire group that cleaning ball is produced, wire group diameter is 12cm.
Its preparation process is with embodiment one.
The comparative example four: proportioning raw materials is within the scope of the present invention example not
The grey cast iron matrix is percentage composition by weight: C is 2.5%, and Si is 1.3%, and Mn is 0.4%, and Zr is 0.2%, and P is 0.09%, and S is 0.5%, and all the other are prepared burden for Fe.
The composition weight percentage of Mild Steel Wire is: C is 0.03%, and Si is 0.06%, and Mn is 0.2%, P＜0.05%, and S＜0.045%, all the other are Fe.This steel wire diameter is 1mm, and the volume percent that Mild Steel Wire accounts for material is 3%.Mild Steel Wire not nickel plating of surface.Press the ordinary method making wire group that cleaning ball is produced, wire group diameter is 15cm.
Its preparation process is with embodiment one.
The comparative example five: proportioning raw materials is within the scope of the present invention example not
The grey cast iron matrix is percentage composition by weight: C is 25%, and Si is 3%, and Mn is 2%, and Zr is 3%, P＜0.08%, and S＜0.25%, all the other are prepared burden for Fe.
The composition weight percentage of Mild Steel Wire is: C is 0.2%, and Si is 0.4%, and Mn is 0.6%, P＜0.05%, and S＜0.045%, all the other are Fe.This steel wire diameter is 1mm, and the volume percent that Mild Steel Wire accounts for material is 40%.Mild Steel Wire not nickel plating of surface.Press the ordinary method making wire group that cleaning ball is produced, wire group diameter is 12cm.Its preparation process is with embodiment one.
Table 1
As seen from the above table, C, Si, Mn increase in the chemical ingredients of graphitic pig iron and Mild Steel Wire is beneficial to the raising of material hardness in the material of the present invention.But too much, can reduce the toughness of body material.P and S increase, and also can reduce the fragility of body material.
The increase of Zr not only is beneficial to the raising of intensity and hardness in the graphitic pig iron, and helps the toughness raising.But, too much cause the increase of Zr and C compound, reduce the toughness of material.
The increase of Mild Steel Wire volume percent is beneficial to the raising of toughness of material.But too much, reduced the hardness of material, also reduced the intensity of material.
Intensity, impelling strength and the hardness of product one, two, three of the present invention are all better, and visible high-strength grey cast iron material of the present invention has good performance.
[0031]The increase of Mild Steel Wire volume percent is beneficial to the raising of toughness of material.But too much, reduced the hardness of material, also reduced the intensity of material.
Intensity, impelling strength and the hardness of product one, two, three of the present invention are all better, and visible high-strength grey cast iron material of the present invention has good performance.
Claims (3)
1. high-strength grey cast iron material, it is characterized in that: this material is matrix with the grey cast iron, the wire group that in matrix, is distributing and forming by Mild Steel Wire, used Mild Steel Wire diameter is 1-2mm, the diameter of wire group is 10-15cm, and the volume percent that Mild Steel Wire accounts for material is 5-35%;
The following chemical components in percentage by weight of described grey cast iron matrix: C is 2.7%～4.0%, and Si is 1.4%～2.5%, and Mn is 0.5-1.4%, and Zr is 0.5-2%, P＜0.08%, and S＜0.25%, all the other are Fe;
The following chemical components in percentage by weight of described Mild Steel Wire is: C is 0.05%～0.12%, and Si is 0.09%～0.3%, and Mn is 0.25-0.5%, P＜0.05%, and S＜0.045%, all the other are Fe.
2. high-strength grey cast iron material according to claim 1 is characterized in that: compound N i3C and Ni3Si particle are also distributing in the described matrix.
3. high-strength grey cast iron preparation methods, it is characterized in that: it may further comprise the steps:
The preparation of nickel plating Mild Steel Wire: cut-off is directly for 1-2mm, composition weight percentage: C are 0.05%～0.12%, Si is 0.09%～0.3%, Mn 0.25-0.5%, P＜0.05%, S＜0.045%, all the other be the Mild Steel Wire of Fe, and controlling the volume percent that Mild Steel Wire accounts for material is 5-35%; At its plating nickel on surface, the thickness of nickel layer is the 50-500 micron according to a conventional method;
Ordinary method by cleaning ball production is made wire group with above-mentioned nickel plating Mild Steel Wire, wire group's diameter is 10-15cm, number of metal silk group is put into casting mold mo(u)ld bottom half die cavity, the tightness of wire group guarantees that by the volume percent decision that Mild Steel Wire accounts for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, the molten iron cast is waited in the mould assembling back that finishes;
The preparation of grey cast iron material matrix: percentage composition C is 2.7%～4.0% by weight, Si is 1.4%～2.5%, Mn is that 0.5-1.4%, Zr are 0.5-2%, P＜0.08%, S＜0.25%, all the other prepare burden for the grey cast iron of Fe, the grey cast iron material melts in induction furnace, and temperature of fusion is 1450-1480 ℃;
Above-mentioned grey cast iron molten iron is poured into the dry sand casting mold that nickel plating low-carbon (LC) wire group is housed; Liquid molten iron surrounds the nickel plating Mild Steel Wire, cooled and solidified then, and forming with the white cast iron is the material that wherein is distributed with wire group of base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100074745A CN102071379B (en) | 2011-01-14 | 2011-01-14 | High-strength gray cast iron material and preparation method thereof |
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| CN2011100074745A CN102071379B (en) | 2011-01-14 | 2011-01-14 | High-strength gray cast iron material and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3991240A (en) * | 1975-02-18 | 1976-11-09 | Metco, Inc. | Composite iron molybdenum boron flame spray powder |
| JPS60208449A (en) * | 1984-04-02 | 1985-10-21 | Nissan Motor Co Ltd | Composite metal |
| US5163498A (en) * | 1989-11-07 | 1992-11-17 | Lanxide Technology Company, Lp | Method of forming metal matrix composite bodies having complex shapes by a self-generated vacuum process, and products produced therefrom |
| CN1154982A (en) * | 1996-01-16 | 1997-07-23 | 钱幼沧 | Composite wear-resistant structural material |
| CN101705455A (en) * | 2009-11-09 | 2010-05-12 | 西安建筑科技大学 | Preparation process of grey cast iron base composite material |
| CN101709441A (en) * | 2009-11-09 | 2010-05-19 | 西安建筑科技大学 | Preparation process of nodular cast iron-based composite material |
-
2011
- 2011-01-14 CN CN2011100074745A patent/CN102071379B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3991240A (en) * | 1975-02-18 | 1976-11-09 | Metco, Inc. | Composite iron molybdenum boron flame spray powder |
| JPS60208449A (en) * | 1984-04-02 | 1985-10-21 | Nissan Motor Co Ltd | Composite metal |
| US5163498A (en) * | 1989-11-07 | 1992-11-17 | Lanxide Technology Company, Lp | Method of forming metal matrix composite bodies having complex shapes by a self-generated vacuum process, and products produced therefrom |
| CN1154982A (en) * | 1996-01-16 | 1997-07-23 | 钱幼沧 | Composite wear-resistant structural material |
| CN101705455A (en) * | 2009-11-09 | 2010-05-12 | 西安建筑科技大学 | Preparation process of grey cast iron base composite material |
| CN101709441A (en) * | 2009-11-09 | 2010-05-19 | 西安建筑科技大学 | Preparation process of nodular cast iron-based composite material |
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