CN102051541B - Heat-resisting steel material and preparation method thereof - Google Patents
Heat-resisting steel material and preparation method thereof Download PDFInfo
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- CN102051541B CN102051541B CN2011100074482A CN201110007448A CN102051541B CN 102051541 B CN102051541 B CN 102051541B CN 2011100074482 A CN2011100074482 A CN 2011100074482A CN 201110007448 A CN201110007448 A CN 201110007448A CN 102051541 B CN102051541 B CN 102051541B
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Abstract
The invention provides a heat-resisting steel material and a preparation method thereof. The heat-resisting steel material has good performance. The preparation method has simple process and low production cost, and is suitable for industrialized production. The material takes heat-resisting steel as a substrate, metal wire groups formed by iron wires and heat-resisting steel wires are distributed in the substrate, and the diameters of the iron wire and the heat-resisting steel wire are both 1-2mm; the diameter of each metal wire group is 10-15cm, and the total lengths of the heat-resisting steel wire and the iron wire are equal; and the total volume percentage of the two metal wires in the material is10-40%.
Description
Technical field
The invention belongs to metal material field, relate to a kind of heat-resisting steel material and preparation method thereof.
Background technology
In metal material field, high temperature steel receives generally as the low-cost heat-resisting material always and paying attention to.
The invention that CN200910066507.6 number application discloses a kind of low-cost and high-property heat resistant steel belongs to the heat-resisting alloy steel field, but the non-stop run in 800-1200 ℃ of scope of this alloy.Have oxidation-resistance and excellent non-deformability.Its chemical ingredients is: (% by weight) carbon C:0.25-0.6%, chromium Cr:23-30%, nickel: 8-12%, silicon Si:1.5-3.5%, manganese Mn:1.8-3.5%, nitrogen N:0.2-1.5%, rare earth Re:0.2-1.5%, titanium Ti:0.001-1.8%, vanadium V:0.001-0.8%, phosphorus P: sulphur S＜0.04%:＜0.03%, and all the other are iron Fe.Used a large amount of rare precious metal alloying elements at this alloy, and the alloying element amount of using is big.The nitrogen element directly adds in the steel very difficult.
CN200910168425.2 number application discloses a kind of New Heat-Resistant Steel, and the weight percent of its chemical ingredients is: C 0.65～0.75%; Si 0.7～1.0%; Mn 1.0～1.2%; P 0.0005～0.0010%; S 0.005～0.006%; Cr28～29%; Ni20.5～21.0%; Mo 0.55～0.60%; Al 0.022～0.026%; Co 0.11～0.12%; Ti 0.0010～0.0015%; Nb 0.65～0.70%; V 0.055～0.065%; W 1.20～1.25%; Pb 0.00020～0.00025%; B 0.0005～0.0006%; Sn 0.0065～0.0075%; As 0.00010～0.00013%; Bi 0.00010～0.00014%; Ca 0.0015～0.0025%; Fe 44.8～45.5%.Machining and welding property are good under the as cast condition, low cost of manufacture.Be applicable to the thermal treatment frock clamp of having relatively high expectations.Used a large amount of rare precious metal alloying elements at this alloy, and the alloying element amount of using is big.The industry batching is also very complicated.
Summary of the invention
The object of the invention is exactly to above-mentioned technological deficiency, and a kind of heat-resisting steel material is provided, and this material has good performance.
Another object of the present invention provides a kind of preparation method of heat-resisting steel material, and this preparing method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to realize through following technical scheme:
A kind of heat-resisting steel material, this material are matrix with high temperature steel, the wire group that in matrix, is distributing and forming by iron wire and heat-resistant steel wire, and used iron wire and heat-resistant steel wire diameter are 1-2mm; Wire group's diameter is 10-15cm, and the overall length of heat-resistant steel wire and iron wire is suitable in the material; The volume percent that two kinds of wires account for material altogether is 10-40%;
The weight percentage C of each composition of heat-resistant steel matrix is 0.25-0.6%, and Si is 2-5%, and Mn is 2-4%, and Cr8-9%, Gd are 0.5-1%, and < 0.08%, < 0.25%, all the other are Fe to S to P;
The weight percentage of iron wire composition is: C is 0.05-0.09%, and Si is 0.2-0.3%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P;
The following chemical components in percentage by weight of heat-resistant steel wire is: C is 0.06-0.08%, and Si is 0.5-0.9%, and Mn is 0.5-1.5%, P≤0.035%, and S≤0.030%, Ni are 19-22%, and Cr is 24-26%, and all the other are Fe.
Compound S i3N4 that also is distributed with in the matrix and Cr2N particle.
A kind of preparation method of heat-resisting steel material is characterized in that: it may further comprise the steps:
The preparation of nitriding steel wire and nickel coated iron wire: directly: C is 0.05-0.09% to cut-off for 1-2mm, composition are that weight percentage is respectively, and Si is 0.2-0.3%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are the iron wire of Fe to S to P; And cut-off is that: C is 0.06-0.08% for 1-2mm, composition weight percentage directly, and Si is 0.5-0.9%, and Mn is 0.5-1.5%; P≤0.035%, S≤0.030%, Ni are 19-22%; Cr is 24-26%, and all the other are the heat-resistant steel wire of Fe, and the overall length of used heat-resistant steel wire and iron wire is suitable; The volume percent that the control iron wire accounts for material is 10-40%;
Respectively in its surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 100-200 μ m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 100-300 μ m;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned nitriding steel wire and nickel coated iron 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 steel wire and iron wire account 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, pouring molten steel is waited in the mould assembling back that finishes;
The preparation of heat-resisting steel material matrix: percentage composition C is 0.25-0.6% by weight, and Si is 2-5%, and Mn is 2-4%, and Cr8-9%, Gd are 0.5-1%, and < 0.08%, < 0.25%, all the other prepare burden for the high temperature steel of Fe S P; The high temperature steel raw material melts in induction furnace, forms liquid molten steel, and temperature of fusion is 1620-1660 ℃;
Above-mentioned high temperature steel molten steel is poured into the dry sand casting mold that wire group is housed, and liquid molten steel surrounds nitriding steel wire and nickel coated iron wire, cooled and solidified then, form with high temperature steel be base wherein be distributed with the material that wire is rolled into a ball.
It is following that the present invention compares the beneficial effect of prior art:
1, high temperature steel of the present invention contains a large amount of nitride, so hardness is high, has the good heat endurance ability.This material is mainly used in the heat-resisting consumable accessory that industrial circles such as mine, coal, building materials are used, like shell liner, aside-liner etc.
2, iron wire in the material and heat-resistant steel wire self have suitable intensity and high toughness.The matrix of iron wire and heat-resistant steel wire all is a steel.Therefore iron wire and high temperature steel are easy to combine, and form good metallurgical binding.Like this, iron wire is distributed in the high temperature steel, and material is had good enhancing toughening effect.
3, contact with iron wire when molten steel gets into the casting mold die cavity, the Ni and the N on iron wire surface are fused to molten steel, and the N reaction on Si in the molten steel and Cr and iron wire top layer forms Si3N4 and Cr2N, these special compound good stabilities.These special compounds that form have further improved the thermotolerance of material.
4, Gd has the effect of remarkable refinement to the tissue of high temperature steel, for high temperature steel toughness reinforcing important effect is arranged.C and Gd also can form C and Gd compound Gd3C in addition, help the raising of material thermal resistance.
5, alloy material is without noble element, and main alloy element iron wire is again brought into, and the cost of material is low for iron wire, and preparation technology is easy, and production cost is low, and the alloy material performance of production is good, and is convenient to very much suitability for industrialized production.
Alloy property of the present invention is seen table 1.
Description of drawings
The metallographic structure of the heat-resisting steel material that Fig. 1 makes for the embodiment of the invention one.
Fig. 1 can see at high temperature steel and combining well with iron wire.
Embodiment
Below each embodiment only with of the present invention the explaining of opposing, weight percent wherein all can change weight g, kg or other weight unit intoFollowing steel wire and iron wire are commercial, the coating self-control.
Embodiment one:
The preparation of nitriding steel wire and nickel coated iron wire: directly: C is 0.05% to cut-off for 1mm, composition are that weight percentage is respectively, and Si is 0.2%, and Mn is 0.25%, and < 0.02%, < 0.025%, all the other are the iron wire of Fe to S to P;
And cut-off is that: C is 0.06% for 1mm, composition weight percentage directly, and Si is 0.5%, and Mn is 0.5%, and Ni is 19%, and Cr is 24%, P≤0.035%, and S≤0.030%, all the other are the heat-resistant steel wire of Fe, used heat-resistant steel wire is suitable with the overall length of iron wire; The volume percent that iron wire and heat-resistant steel wire account for material altogether is 10%.
Respectively in its surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 100 m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 100 μ m;
By the ordinary method of cleaning ball production above-mentioned nitriding steel wire and nickel coated iron wire respectively being got a rhizoid forms globular mixings mariages wire group (two rhizoids is respectively got a while moulding; Form mariages wire group; Moulding can or be claimed the method for steel wire lump by the cleaning ball of the usefulness that washes the dishes), wire group diameter is 15cm, and 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 steel wire and iron wire account 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, pouring molten steel is waited in the mould assembling back that finishes;
The preparation of heat-resisting steel material matrix: percentage composition C 0.25% by weight, and Si is 2%, and Mn is 2%, and Cr8%, Gd are 0.5%, and < 0.08%, < 0.25%, all the other prepare burden for the high temperature steel of Fe S P; The high temperature steel raw material melts in induction furnace, forms liquid molten steel, and temperature of fusion is 1635-1640 ℃;
Above-mentioned high temperature steel molten steel is poured into the dry sand casting mold that wire group is housed, and liquid molten steel surrounds nitriding steel wire and nickel coated iron wire, cooled and solidified then, form with high temperature steel be base wherein be distributed with the material that wire is rolled into a ball.
Embodiment two:
Heat-resisting steel material matrix composition is percentage composition C 0.60% by weight, and Si is 5%, and Mn is 4%, and Cr9%, Gd are 1%, and < 0.08%, < 0.25%, all the other prepare burden for Fe S P.
The following chemical components in percentage by weight of iron wire is: C is 0.09%, and Si is 0.3%, and Mn is 0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
The following chemical components in percentage by weight of heat-resistant steel wire is: C is 0.08%, and Si is 0.9%, and Mn is 1. 5%, P≤0.035%, and S≤0.030%, Ni are 22%, and Cr is 26%, and all the other are Fe.
Iron wire and heat-resistant steel wire diameter are 2mm, and used heat-resistant steel wire is suitable with the overall length of iron wire; The volume percent that control iron wire and heat-resistant steel wire account for material altogether is 40%.
Respectively in its surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 200 m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 300 μ m; Press the ordinary method making of cleaning ball production and be with the mariages wire group of two kinds of wires mixing of coating, wire group diameter is 10cm.
The preparation process is with embodiment one.
Embodiment three:
The composition of heat-resisting steel material matrix: percentage composition C 0.3% by weight, and Si is 3%, and Mn is 3%, and Cr8%, Gd are 0.7%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The composition weight percentage of iron wire is that C is 0.07%, and Si is 0.25%, and Mn is 0.3%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
The following chemical components in percentage by weight of heat-resistant steel wire is: C is 0.07%, and Si is 0.7%, and Mn is 1%, P :≤0.035%, and S≤0.030%, Ni are 21%, and Cr is 25%, and all the other are Fe.
Iron wire and heat-resistant steel wire diameter are 1.3mm, and used heat-resistant steel wire is suitable with the overall length of iron wire; The two volume percent that accounts for material of iron wire and heat-resistant steel wire is 20%.
Respectively in its surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 150 m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 200 μ m; Press the ordinary method making of cleaning ball production and be with the mariages wire group of two kinds of wires mixing of coating, wire group diameter is 15cm.
The preparation process is with embodiment one.
The comparative example four: proportioning raw materials is within the scope of the present invention instance not
The composition of heat-resisting steel material matrix: percentage composition C 0.2% by weight, and Si is 1%, and Mn is 1%, and Cr6%, Gd are 0.4%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The composition of iron wire is that C is 0.04%, and Si is 0.1%, and Mn is 0.2%, and < 0.02%, < 0.025%, all the other are Fe to S to P.Iron wire and heat-resistant steel wire diameter are 0.5mm.
Used heat-resistant steel wire is suitable with the overall length of iron wire; The two volume percent that accounts for material altogether is 40%.
Iron wire not nitriding of surface and nickel plating.Press ordinary method making kind of two iron wire blended mariages wire groups that cleaning ball is produced, wire group diameter is 15cm.
The preparation process is with embodiment one.
The comparative example five: proportioning raw materials is within the scope of the present invention instance not
The composition of heat-resisting steel material matrix: percentage composition C 0.7% by weight, and Si is 6%, and Mn is 5%, and Cr10%, Gd are 2%, and < 0.08%, < 0.25%, all the other are Fe to S to P.
The composition of iron wire is that C is 0.1%, and Si is 0.4%, and Mn is 0.4%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
The following chemical components in percentage by weight of heat-resistant steel wire is: C is 0.09%, and Si is 1%, and Mn is 2%, P :≤0.035%, and S≤0.030%, Ni are 23%, and Cr is 27%, and all the other are Fe.
Iron wire and heat-resistant steel wire diameter are 3mm, and used heat-resistant steel wire is suitable with the overall length of iron wire; The two volume percent that accounts for material altogether is 45%.
Respectively in its surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 250 m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 350 μ m; Press the ordinary method making of cleaning ball production and be with the mariages wire group of two kinds of wires mixing of coating, wire group diameter is 10cm.
The preparation process is with embodiment one.
Table 1
Visible by last table, C, Si, Mn increase in the chemical ingredients of high temperature steel and iron wire, are beneficial to the raising of material hardness.But too much, increase the fragility of body material.P and S increase, and increase the fragility of body material.
The increase of Gd not only is beneficial to the raising of hardness in the high temperature steel, and helps the toughness raising.But, too much cause the increase of Gd and C compound, reduce the toughness of material.
The increase of iron wire and heat-resistant steel wire volume percent is beneficial to the raising of toughness of material.But too much, be unfavorable for the coating of steel, reduce the mechanical property of material.
The thickness of nickel plating and nitrided case increases, and is beneficial to the alloying of molten steel; Nickel and nitrogen are difficult for fusing into molten steel in short-term, cause the waste of element but too much.
Claims (1)
1. the preparation method of a heat-resisting steel material, it is characterized in that: it may further comprise the steps:
The preparation of nitriding steel wire and nickel coated iron wire: directly: C is 0.05-0.09% to cut-off for 1-2mm, composition are that weight percentage is respectively, and Si is 0.2-0.3%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are the iron wire of Fe to S to P; And cut-off is that: C is 0.06-0.08% for 1-2mm, composition weight percentage directly, and Si is 0.5-0.9%, and Mn is 0.5-1.5%; P≤0.035%, S≤0.030%, Ni are 19-22%; Cr is 24-26%, and all the other are the heat-resistant steel wire of Fe, and the overall length of used heat-resistant steel wire and iron wire is suitable; The volume percent that control iron wire and steel wire account for material is 10-40%;
Respectively in heat-resistant steel wire and iron wire surface carburization and nickel plating, form nitriding steel wire and nickel coated iron wire respectively: the thickness of the nitrided case on the surface of nitriding steel wire is 100-200 μ m by ordinary method; The thickness of the nickeling layer on the surface of nickel coated iron wire is 100-300 μ m;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned nitriding steel wire and nickel coated iron 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 heat-resistant steel wire and iron wire account 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, pouring molten steel is waited in the mould assembling back that finishes;
The preparation of heat-resisting steel material matrix: percentage composition C is 0.25-0.6% by weight, and Si is 2-5%, and Mn is 2-4%, and Cr8-9%, Gd are 0.5-1%, and < 0.08%, < 0.25%, all the other prepare burden for the high temperature steel of Fe S P; The high temperature steel raw material melts in induction furnace, forms liquid molten steel, and temperature of fusion is 1620-1660 ℃;
Above-mentioned high temperature steel molten steel is poured into the dry sand casting mold that wire group is housed, and liquid molten steel surrounds nitriding steel wire and nickel coated iron wire, cooled and solidified then, form with high temperature steel be base wherein be distributed with the material that wire is rolled into a ball.
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| CN101314839B (en) * | 2008-06-13 | 2010-04-21 | 哈尔滨工业大学 | Reinforcement method for continuous filament reinforced metallic matrix composite |
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Address after: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee after: Nanjing University of Information Science and Technology Address before: 210044 Nanjing City, Pukou Province, Nanjing Road, No. 219, No. six, No. Patentee before: Nanjing University of Information Science and Technology |
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Effective date of registration: 20151113 Address after: 211600 No. 13, health Road, Jinhu County, Jiangsu, Huaian Patentee after: Jinhu Zhongbo IOT Technology Co., Ltd. Address before: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee before: Nanjing University of Information Science and Technology |
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