CN102851625A - Tellurium-containing high-performance stainless steel grinding material and manufacturing method thereof - Google Patents
Tellurium-containing high-performance stainless steel grinding material and manufacturing method thereof Download PDFInfo
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- CN102851625A CN102851625A CN201210052333XA CN201210052333A CN102851625A CN 102851625 A CN102851625 A CN 102851625A CN 201210052333X A CN201210052333X A CN 201210052333XA CN 201210052333 A CN201210052333 A CN 201210052333A CN 102851625 A CN102851625 A CN 102851625A
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Abstract
The invention discloses a tellurium-containing high-performance stainless steel grinding material which comprises the following components by mass percent: 13.00% of Mn, 11.00-12.00% of Cr, 5.00-6.00% of Ni, 0.035-0.08% of Te, 2.50-3.0% of Cu, and the balance of Fe and inevitable trace impurities. The material of the invention has reduced using amount of rare metal, and the cost is further reduced. In addition, the addition of Te increases the steel ductility, and improves the surface glossiness of steel after processing; the processed steel is not easy to generate cracks or flaws, is easy to cut and process, has good polishability and high precision. Moreover, the addition of tellurium provides the material with good heat conductivity, electric conductivity, corrosion resistance, high and low temperature resistance, and non-magnetic performance. Therefore, the stainless steel material of the invention is a first raw material in fields of electrical element semi conducting materials, terminals, automobile components, elastic elements, welding electrodes, furnace assemblies, aviation and aerospace, sea and ships.
Description
Technical field
The present invention relates to the material technology field, disclose a kind of tellurium high-performance magnetism-free stainless steel abrasive substance and production method thereof of containing.
Background technology
Along with the fast development of the modern industries such as national defence, the energy, superconduction, traffic, various high-performance, need research and development badly without the novel stainless steel under magnetic, the cold condition.Especially need the excellent especially stainless material of performance to carry out retrofit at assemblies such as electronic component, terminal, auto parts, elastic element, grid for welding, stove inner assemblies.But in traditional austenitic stainless steel, various model materials have different defectives and problem, its principal element of sum up have following some:
(1) traditional austenitic stainless steel is take nickel, chromium as principal element, and the yield strength of steel is too low; (2) stability of austenite structure is poor, because the easy transition temperature of the martensite of these steel so the part austenitic transformation becomes martensite under lower temperature, changes the performances such as intensity, toughness and magnetic of material.(3) content of nickel and chromium increases and can improve austenitic stability, but can make steel magnetic occur at low temperatures, affects use properties, and can larger contribution not arranged to intensity and toughness.(4) nickel element is relatively more expensive, is the national strategy narrow resources, and traditional austenitic stainless steel nickel content is 8～9%, even up to more than 12%, it is high to cause the stainless steel cost, restricts market development.(5) the component volume of various products is all very little, require material therefor must possess good free-cutting machinability, toughness, corrodibility and tensile strength, and there is above defective in traditional austenite stainless steel capital and is difficult for machining, the cutter loss is serious, and working (machining) efficiency is low.
In sum, need badly at present research and development a kind of high-yield strength, good plasticity and toughness, nonmagnetic, be easy to cut, very low temperature, the stable stainless steel of material structure substitutes traditional austenitic stainless steel series material.
Summary of the invention
The objective of the invention is provides a kind of tellurium high-performance magnetism-free stainless steel abrasive substance that contains in order to overcome above-mentioned weak point.This stainless material satisfy solidity to corrosion, improve intensity, plasticity is good, nonmagnetic, be easy to cutting, on the stable basis of very low temperature and material structure, cost is starkly lower than traditional austenite 304,303 series stainless steel materials about 20%, improve product qualified rate, alligatoring, smooth finish etc. are better than existing 304 and 303 series standards greatly, and definitely nonmagnetic.
The objective of the invention is to realize in the following manner:
The present invention is nonmagnetic, be easy to cutting, etch resistant properties is strong, plasticity is good contains tellurium high-performance stainless steel abrasive substance, comprise by mass percentage following component: Mn:13.00, Cr:11.00～12.00, Ni:5.00～6.00, Te:0.035～0.08, Cu:2.50～3.0, all the other are Fe and inevitable trace impurity, and the mass percent of preferred Te is 0.04～0.06.Described stainless-steel grinding material also contains carbon C≤0.05, silicon Si≤0.7, sulphur S≤0.15.
The above-mentioned manufacture method that contains tellurium high-performance stainless steel abrasive substance comprises that intermediate frequency furnace just refines, the refining of AOD stove, and ingot steel casting, rolling blank, pre-finish rolling and finish rolling describedly may further comprise the steps in the refining of AOD stove:
After using ordinary scrap steel just to refine through intermediate frequency furnace as raw material, the molten steel that obtains enters the vacuum refinement of AOD stove, detect by bath analysis, supply the metallic element in the molten steel, the degree of each element: Mn:13.00, Cr:11.00～12.00, Ni:5.00～6.00, Cu:2.50～3.00 proportionally add the Te element again; 1100～1200 ℃ of furnace temperature, soaking time 100～120 minutes, vacuum tightness is not more than 1.5mbar, reaches the content＜30ppm of oxygen, the content＜2.5ppm of hydrogen.The furnace temperature is 1100～1200 ℃ at the beginning of intermediate frequency furnace.
Deoxidation and remove gas and inclusion in the described AOD stove refining process makes carbon content be controlled at the C of total steel quality≤0.05%; The content of sulphur is controlled at the S that accounts for steel quality≤0.15%, and the content of silicon is controlled at the Si that accounts for steel quality≤0.7.
The present invention is when ingot steel casting, and adopting removes slag, and the method for making a bet is poured into a mould.
The present invention adopts producer gas generator before rolling blank be the process furnace air feed, and process furnace is heated to 900～1050 ℃.
When rolling blank, forging ratio K 〉=6, beginning to roll temperature is 1100～1200 ℃, is preferably 1150 ℃ of temperature.Be incubated 100～120 minutes in this temperature range, after soaking time arrives, begin rollingly, finishing temperature is 1000～1050 ℃.
Adopt finishing train to carry out pre-finish rolling, finish rolling after rolling blank, linear speed is 50～100 meter per seconds, preferred 70 meter per seconds, and finish rolling material diameter is between 0.5～16mm.Can carry out the scale processing grinding after the finish rolling.
The present invention is after obtaining the high-performance stainless steel abrasive substance, can also further process and surface treatment, at first according to market user's requirement, roll out different size size scale pole, hexagonal rod, square rod, section bar etc. by above-mentioned technique, examine-pack-put in storage-dispatch from the factory by surface treatment-peeling-grinding (grinding tolerance should be controlled in the 5-10 silk scope)-Ding.
With the high-performance stainless steel abrasive substance that adopts above-mentioned production technique to produce and foreign standard and Japanese stainless steel SUS303, domestic 304,303B is made relatively in Jiangsu, and its chemical ingredients is compared and seen the following form:
High-performance stainless steel abrasive substance of the present invention has following beneficial effect compared with the prior art.
1, adopt the method cast steel ingot of making a bet that removes slag, can effectively control and remove the impurity of molten steel, pure molten steel makes cast surface of steel ingot inclusion-free, oxide skin out, further improves mill product qualification rate and earning rate.
2, reduce the usage quantity of metallic element Cr, Ni scarce resource metal, cost is further reduced.
3, add Te after, capable of regulating C≤0.05, Si≤0.7, S≤0.15 is so that the molten steel quality obtains is further pure.
4, the adding of Te is mainly used to increase the ductility of steel, improves the surperficial glossy degree of the steel after processing, and difficult generation is split
Trace and crackle play vital effect for improving product qualified rate.
5, the adding of Te can improve foundry goods flintiness and surface abrasion resistance, also is easy to simultaneously cutting and processing, can shorten electrode
Process period, polishability is good, and precision is high.
6, the adding of Te possesses good heat conduction, conduction, corrosion-resistant, anti-high and low-temp, nonmagnetic energy, is electrical element
The splendid starting material in semiconductor material, terminal, automobile component, elastic element, grid for welding, stove inner assembly and aerospace, marine ship field.
Description of drawings
Fig. 1 is the corrosion life graphic representation that embodiment contains tellurium high-performance stainless steel abrasive substance.
Curvilinear motion is divided into 3 stages among the figure, and the fs is the anti-corrosion test initial stage, and subordinate phase is stationary phase, and the phase III is that strong acid corrodes the quick phase.The salt spray corrosion test evaluation is adopted in anti-corrosion test, uses 5% neutral salt solution, 35 ℃ of temperature, and air inlet pressure is 35Kpa, and going out air pressure is 60Kpa, and when specimen surface occurred at dark-coloured, the time that contains tellurium high-performance stainless steel material experience was 130 hours.
Fig. 2 is that embodiment contains tellurium high-performance stainless steel abrasive substance relative reduction in area test microgram.
Among the figure, in containing tellurium high-performance stainless steel abrasive substance, find too on the stretching fracture to have transcrystalline brittle failure facet, difference be in its facet slippage with higher deformation quantity.Detect relative reduction in area 22%, less than existing steel shrinking percentage.
Fig. 3 is that embodiment contains tellurium and do not contain two kinds of austenitic stainless steel impact toughnesses of tellurium situation that changes.
Among the figure, the hardness increase rate of Fe-22Mn-7Cr steel that does not contain tellurium is larger, and the distance that hardness improves is also larger.The Fe-13Mn-12Cr-3Cu-5Ni-0.8Te that contains tellurium slightly is improved near fracture, and changes in hardness is consistent with metallographic distribution tissue, and away from incision position, the feature of deformed microstructure reduces gradually.
Embodiment
Below by specific embodiment the present invention is further elaborated, should not be construed as limited overall technical solution.
Embodiment 1
Contain tellurium high-performance stainless steel abrasive substance, by mass percentage by following component: Mn:13.00%, Cr:12.00%, Ni:5.00%, Te:0.08%, Cu:3.00%, C≤0.05%, Si≤0.7%, S≤0.15%, all the other are Fe and inevitable trace impurity.
Above-mentioned stainless material be successively through intermediate frequency furnace just refine, the refining of AOD stove, ingot steel casting, rolling blank, pre-finish rolling and finish rolling are specially.
1, intermediate frequency furnace just refines: use ordinary scrap steel to be raw material, when intermediate frequency furnace just refines, turn to molten steel under 1150 ℃ of conditions of furnace temperature.
2, in the refining of AOD refining furnace: just the molten steel after the refining enters the vacuum refinement of AOD stove, evacuated time 10 minutes, and vacuum tightness is 1.5mbar, reaches the content 28ppm of oxygen, the content 2.4ppm of hydrogen, 1150 ℃ of furnace temperature, soaking time 100 minutes.Chromic oxide (Cr in the reducing slag
2O
3), deoxidation is also removed gas and inclusion, makes carbon content be controlled at the C of total steel quality≤0.05%; Remove sulfide inclusion, the content of sulphur is controlled at the S that accounts for steel quality≤0.15%, and the content of silicon is controlled at the Si that accounts for steel quality≤0.7, and the oxidation molten steel fully takes off P.Before coming out of the stove 20 minutes, according to ultimate analysis in the stove, add Cu, Mn, Cr and Ni raw material, control respectively Cu and account for total steel quality 3%, Mn accounts for total steel quality 13%, and Ni accounts for total steel quality 5%, Cr accounts for total steel quality 12%, adds the Te element that accounts for total steel quality 0.8% again.
3, ingot steel casting: the material that obtains after the refining furnace refining adopts the method for making a bet that removes slag to pour into steel ingot.
4, rolling blank: it is the process furnace air feed that the steel ingot that above-mentioned steps obtains adopts producer gas generator, and process furnace heats steel ingot under 1050 ℃ of conditions.During rolling blank, its forging ratio K=6, beginning to roll temperature is 1150 ℃, this temperature insulation 100 minutes, after soaking time arrives, beginning edging, it is 1000 ℃ that finish-forging rolls temperature.
5, pre-finish rolling, high line finish rolling: adopt finishing train to carry out pre-finish rolling, finish rolling, the finish rolling linear speed is 70 meter per seconds, and finish rolling material diameter is 0.5～16mm.
6, straightening, peeling, polishing, grinding: require to carry out conventional straightening, peeling, polishing, grinding according to materials'use.
The stainless steel the performance test results that embodiment 1 method prepares is as shown in table 1:
Table 1
Annotate: 1.: the salt spray corrosion test evaluation is adopted in anti-corrosion test, uses 5% neutral salt solution, 35 ℃ of temperature, air inlet pressure is 35Kpa, going out air pressure is 60Kpa, and when specimen surface occurred at dark-coloured, the time of high-performance stainless steel material experience was and records the corrosion proof final time.2.: easily the machinability classification is referring to Han Rongdi, and Yu Qixun is outstanding, cutting of hardworking material processing, Beijing Machinery Industry press, 1996.
Contain tellurium high-performance stainless steel abrasive substance, by mass percentage by following component: Mn:13.00%, Cr:11.00%, Ni:6.00%, Te:0.04%, Cu:2.50%, C≤0.05%, Si≤0.7%, S≤0.15%, all the other are Fe and inevitable trace impurity.
Above-mentioned stainless material be successively through intermediate frequency furnace just refine, the refining of AOD stove, ingot steel casting, rolling blank, pre-finish rolling and finish rolling are specially.
1, intermediate frequency furnace just refines: use ordinary scrap steel to be raw material, when intermediate frequency furnace just refines, turn to molten steel under 1200 ℃ of conditions of furnace temperature.
2, in the refining of AOD refining furnace: just the molten steel after the refining enters the vacuum refinement of AOD stove, evacuated time 10 minutes, and vacuum tightness is 1.5mbar, reaches the content 28ppm of oxygen, the content 2.4ppm of hydrogen, 1100 ℃ of furnace temperature, soaking time 120 minutes.Chromic oxide (Cr in the reducing slag
2O
3), deoxidation is also removed gas and inclusion, makes carbon content be controlled at the C of total steel quality≤0.05%; Remove sulfide inclusion, the content of sulphur is controlled at the S that accounts for steel quality≤0.15%, and the content of silicon is controlled at the Si that accounts for steel quality≤0.7, and the oxidation molten steel fully takes off P.Before coming out of the stove 20 minutes, according to ultimate analysis in the stove, add Cu, Mn, Cr and Ni raw material, control respectively Cu and account for total steel quality 2.5%, Mn accounts for total steel quality 13%, and Ni accounts for total steel quality 6%, Cr accounts for total steel quality 11%, adds the Te element that accounts for total steel quality 0.04% again.
3, ingot steel casting: the material that obtains after the refining furnace refining adopts the method for making a bet that removes slag to pour into steel ingot.
4, rolling blank: it is the process furnace air feed that the steel ingot that above-mentioned steps obtains adopts producer gas generator, and process furnace heats steel ingot under 1000 ℃ of conditions.During rolling blank, its forging ratio K=6, beginning to roll temperature is 1100 ℃, this temperature insulation 2 hours, after soaking time arrives, beginning edging, it is 1050 ℃ that finish-forging rolls temperature.
5, pre-finish rolling, high line finish rolling: adopt finishing train to carry out pre-finish rolling, finish rolling, the finish rolling linear speed is 70 meter per seconds, and finish rolling material diameter is 0.5～16mm.
6, straightening, peeling, polishing, grinding: require to carry out conventional straightening, peeling, polishing, grinding according to materials'use.
The stainless steel the performance test results that embodiment 2 methods prepare is as shown in table 2:
Table 2
Annotate: 1.: the salt spray corrosion test evaluation is adopted in anti-corrosion test, uses 5% neutral salt solution, 35 ℃ of temperature, air inlet pressure is 35Kpa, going out air pressure is 60Kpa, when specimen surface occurs at dark-coloured, high-performance stainless steel material experience the time
Between be and record the corrosion proof final time.2.: easily the machinability classification is referring to Han Rongdi, and Yu Qixun is outstanding, cutting of hardworking material processing, Beijing Machinery Industry press, 1996.
Claims (10)
1. one kind contains tellurium high-performance stainless steel abrasive substance, it is characterized in that described stainless-steel grinding material comprises following component: Mn:13.00 by mass percentage, Cr:11.00～12.00, Ni:5.00～6.00, Te:0.035～0.08, Cu:2.50～3.0, all the other are Fe and inevitable trace impurity.
2. the tellurium high-performance stainless steel abrasive substance that contains according to claim 1, the mass percent that it is characterized in that Te in the described stainless-steel grinding material is 0.04～0.06.
3. the tellurium high-performance stainless steel abrasive substance that contains according to claim 1 and 2 is characterized in that described stainless-steel grinding material also contains C≤0.05, Si≤0.7, S≤0.15.
4. a claim 1, the 2 or 3 described manufacture method that contain tellurium high-performance stainless steel abrasive substance, comprise that intermediate frequency furnace just refines, the refining of AOD stove, ingot steel casting, rolling blank, pre-finish rolling and finish rolling is characterized in that the refining of described AOD stove may further comprise the steps:
After using ordinary scrap steel just to refine through intermediate frequency furnace as raw material, the molten steel that obtains enters the vacuum refinement of AOD stove, detect by bath analysis, supply the metallic element in the molten steel, the degree of each element: Mn:13.00, Cr:11.00～12.00, Ni:5.00～6.00, Cu:2.50～3.00 proportionally add the Te element again; 1100～1200 ℃ of furnace temperature, soaking time 100～120 minutes, employed vacuum tightness is not more than 1.5mbar, reaches the content＜30ppm of oxygen, the content＜2.5ppm of hydrogen.
5. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 4 is characterized in that in the first furnace temperature of intermediate frequency furnace be 1100～1200 ℃.
6. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 4 is characterized in that in the described AOD stove refining process deoxidation and removes gas and inclusion, makes carbon content be controlled at the C of total steel quality≤0.05%; The content of sulphur is controlled at the S that accounts for steel quality≤0.15%, and the content of silicon is controlled at the Si that accounts for steel quality≤0.7.
7. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 4 is characterized in that rolling
During blank, forging ratio K 〉=6, beginning to roll temperature is 1100～1200 ℃, is incubated 100～120 minutes in this temperature range, after soaking time arrives, begins rollingly, finishing temperature is 1000～1050 ℃.
8. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 7 is characterized in that rolling
Adopting producer gas generator before the blank is the process furnace air feed, and process furnace is heated to 900～1050 ℃.
9. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 4, it is characterized in that after rolling blank, adopting finishing train to carry out pre-finish rolling, finish rolling, the finish rolling linear speed is 50～100 meter per seconds, preferred 70 meter per seconds, and finish rolling material diameter is between 0.5～16mm.
10. the manufacture method that contains tellurium high-performance stainless steel abrasive substance according to claim 9, it is characterized in that finish rolling adopts linear speed be 70 meter per seconds.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990444A (en) * | 2022-06-16 | 2022-09-02 | 浙江青山钢铁有限公司 | Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011579A (en) * | 1999-06-28 | 2001-01-16 | Sumitomo Metal Ind Ltd | Manganese alloy steel, shaft and screw member |
-
2012
- 2012-03-02 CN CN201210052333XA patent/CN102851625A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001011579A (en) * | 1999-06-28 | 2001-01-16 | Sumitomo Metal Ind Ltd | Manganese alloy steel, shaft and screw member |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990444A (en) * | 2022-06-16 | 2022-09-02 | 浙江青山钢铁有限公司 | Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof |
| CN114990444B (en) * | 2022-06-16 | 2024-03-19 | 浙江青山钢铁有限公司 | Sulfur-containing tellurium-containing free-cutting 304 stainless steel and preparation method thereof |
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Application publication date: 20130102 Assignee: Jiangsu Lida Stainless Steel Co.,Ltd. Assignor: Leader Dongtai Special Steel Technology Co., Ltd. Contract record no.: 2013320000474 Denomination of invention: Tellurium-containing high-performance stainless steel grinding material and manufacturing method thereof License type: Exclusive License Record date: 20130530 |
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