CN103447348A - Manufacturing method of stainless steel wire - Google Patents
Manufacturing method of stainless steel wire Download PDFInfo
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- CN103447348A CN103447348A CN2013103162605A CN201310316260A CN103447348A CN 103447348 A CN103447348 A CN 103447348A CN 2013103162605 A CN2013103162605 A CN 2013103162605A CN 201310316260 A CN201310316260 A CN 201310316260A CN 103447348 A CN103447348 A CN 103447348A
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Abstract
The invention relates to a manufacturing method of a stainless steel wire. The manufacturing method comprises the following steps: 1, peeling a surface layer with the depth of 0.1-0.15mm from the stainless steel wire by using a rotary cutting or scraping method, manufacturing the peeled stainless steel wire into a wire of 5.5-10mm; 2, annealing the wire at a temperature of 800-900 DEG C; 3, carrying out coating treatment on the surface of the wire of 5.5-10mm by adopting a coating agent, then drying in a drying furnace at a furnace temperature of 100-150 DEG C for 0.5-1.0h; 4, drawing on a multi-head continuous drawing machine, wherein a large reduction rate of 25-30 percent is adopted in the first head, then the reduction rate is successively reduced, the wire is taken up after being coarsely drawn 6-7 times or medially drawn 7-8 times, if the wire in a delivery sate is a lightly-drawn steel wire, the reduction rate being 10 percent is reserved when the wire is finished, and then the wire is lightly drawn until reaching the specification and size of a finished product; if the wire in the delivery state is a flexible steel wire, the wire is directly drawn until reaching the specification and the size of the finished product.
Description
Technical field
The present invention relates to a kind of STAINLESS STEEL WIRE and manufacture method thereof, belong to the metallic article technical field.
Background technology
Use in a large number at present Ni-Cr austenitic stainless steel manufacturer's standard parts both at home and abroad, as trades mark such as MLOCr18Ni12, MLOCr18Ni9; According to the data introduction, approximately have 60% for the production of stainless steel in global nickel output, nickel is more rare and expensive metal, belongs to strategic materials, and often stainless cost and price also often fluctuate with the ups and downs of nickel valency, and the nickel valency rises suddenly and sharply in recent years; In addition, chromium metal China also lacks very much, and price is also constantly soaring, so Ni-Cr stainless steel price is also along with soaring.Therefore, the continuous research and development of the metallurgical expert of recent domestic go out the new trade mark of a series of joint Ni austenitic stainless steel.
Summary of the invention
The object of the invention is to do not reducing under the rustless property prerequisite of steel, with Al Substitute For Partial Cr metal, when carrying Mn and fall Ni, add the Cu metal, to control the content of the elements such as C, N in addition, having is exactly when manufacturing cold-heading wire again, proposes new technique manufacturing method, makes the integrated performance index of steel reach stainless steel that technical matters that the cold upsetting steel uses requires and the manufacture method of steel wire thereof.
The integrated performance index of above-mentioned steel is embodied in: intergranular corrosion resistance in rustless property, low yield strength ratio, high-ductility, high antioxidant, heat-resistant anti-fatigue, hot corrosion resistance, anti-low temperature (173 ℃) performance, diamagnetism (magnetic permeability mu≤1.2 under magnetic field intensity 18KA/m condition), anti-sulfuric acid or reductant.
The object of the present invention is achieved like this: a kind of stainless steel, its chemical composition consists of (% weight ratio): Cr14.0~17.0, Mn7.0~11.0, Ni1.5~5.5, Cu1.50~3.50, Al1.0~5.0, C≤0.06, N≤0.12, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
The stainless preferred chemical composition of the present invention is (% weight ratio): Cr15.0~16.0, Mn7.5~10.0, Ni3.0~4.0, Cu2.0~3.00, Al1.0~2.0, C≤0.05, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity; Or: Cr14.0~15.0, Mn8.0~9.5, Ni2.0~3.0, Cu1.0~2.0, Al2.0~3.0, C≤0.04, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
The present invention is Cr-Mn-Ni-Cu-Al alloying component system, is that a kind of Ni of falling carries Mn, uses Al for Cr, then adds Cu, control C, N, and the theoretical foundation of design is as follows:
Alloying element is people in order to obtain needed tissue and various performance to the element with certain content range added in stainless steel.The definite principle of main alloy element of the present invention is: carry Mn Ni falls, with Al for Cr, add Cu, control C, N etc., all the other alloying elements are normally used content range.
Nickel equivalent:
%+0.5 * Mn%+0.3 * the Cu% of nickel equivalent=Ni%+30 * (C+N).
Numeral before each element is equivalent to for this element forms the austenitizing ability multiple that nickel forms the austenite ability.
1) Ni and Mn content determines
From the Ni equivalent formula, Ni is important element in austenitic stainless steel, it is to form austenitic first-selected element, because Ni is many-sided to stainless contribution, except forming stable austenite, because Cr-Ni in stainless steel coexists, Ni can promote the passivation for stainless steel membrane stability, can significantly improve that stainless steel is moulded, toughness, can reduce stainless brittle transition temperature, there is low temperature resistivity and diamagnetism and to cold formability and the feature such as weldability is favourable.But the Ni metal is rare and valency is high, metallurgical expert finds the substitute element of Ni more for many years, and the Mn alloying element is comparatively ideal substitute, from the Ni equivalent formula, with 2%Mn, is can substitute the 1%Ni element to form austenitic.So in the new trade mark of the present invention, Ni and Mn content range are defined as on average reducing about 4%Ni, it is suitable carrying the Mn8% left and right, i.e. Ni1.5%-5.5%, Mn7.0%-10.0%.
2) Cu content determines
Copper can improve stainless rustless property and corrosion resistance, and particularly the effect in the reductants such as sulfuric acid is more obvious.Copper is stable and forms the austenitic alloy element, copper can significantly reduce stainless intensity and cold work hardening tendency, improve the plasticity of steel, stainless steel surfaces is had to antibiotic property simultaneously, but copper content is unsuitable too high, because in steel, Cu content increases, stainless thermoplasticity reduces, so Cu content range of the present invention is defined as 1.5-3.5%, is rational.
3) C and N content determines
From the nickel equivalent formula, C and N form two the strongest elements of austenite ability, are 30 times of Ni; But in austenitic stainless steel, generally do not adopt C as forming austenitic element, because, increase along with C content in steel, although can improve intensity, but the moulding of steel, toughness, corrosion resistance, cold formability, weldability etc. will significantly reduce, it is generally acknowledged that its fraud is far longer than profit, so C content is wanted reduce, carbon content of the present invention is defined as≤the 0.06%th, suitable.
In recent years, N is widely applied in austenite and two phase stainless steel, because N can significantly improve the intensity of steel by solution strengthening, and the chromium element that simultaneously in steel, contains q.s, N can improve the passivation ability of steel, improves corrosion resistance of austenitic stainless steels;
When a certain amount of over certain containing the N amount in steel, as at austenitic stainless steel N, surpassed at 0.15 o'clock, the cold and hot working of steel and cold forming reduce, and particularly unsuitable too high to Steel for cold heading processing N, it is rational should suitably being controlled at and being not more than 0.1%.
4) Cr content determines
Cr has on rustless property and the anti-spot corrosion of steel the impact of decision, increase along with Cr content in stainless steel, not only in the anti-corrosion increase of oxidizing acid medium, and, stainless steel abilities such as anticorrosion stress-resistant, spot corrosion, crevice corrosion in chloride solution all are improved, so the Cr element is indispensable important element at stainless steel, generally can not be less than 13%, it is suitable that Cr content range of the present invention is defined as 14-17%.
5) Al content determines
After adding the elements such as AL and Cr in steel, can improve the temperature that FeO occurs, as containing 1%Cr, made FeO 600 ℃ of appearance, if can make FeO occur 800 ℃ of temperature containing 1.1%Al. when higher Cr, Al content, can make FeO occur in temperature more than 800 ℃.Integrated using Cr, Al element can be brought into play larger antioxygenic effect, and steel has good oxidation resistance, and resisting temperature drastic change ability is better, and heat-resistant anti-fatigue and resistance to high temperature corrosion performance are better than the 18-8Cr-Ni stainless steel simultaneously; In addition due to the content that has more Al in steel, can make AUSTENITE GRAIN COARSENING, coarse grain steel wire tensile strength and yield strength reduce, percentage elongation, the contraction percentage of area obviously increase, cold heading performance increases substantially, can bear larger cold deformation and not ftracture, this is the basic point that the present invention pursues, and the present invention determines that the Al content range is that 1-4% is suitable.
Indulge the above, stainless steel of the present invention, have low yield strength ratio, high-ductility, good in oxidation resistance, the plurality of advantages such as low temperature resistivity is good, diamagnetism is good, anti intercrystalline corrosion, therefore can partly substitute traditional Cr-Ni austenitic stainless steels such as OCr18Ni9.
Separately have, for for heat-resisting high antioxygen, heat-resistant anti-fatigue and the good standard component of high temperature corrosion, can select Cr-Mn-Ni-Al series austenitic stainless steel, remove the content that Cu increases Al, also can reach promising result.In the high-temperature oxidation resistant situation, Al can be better for the Cu effect.Study discovery according to metallurgical expert, add equally 1%Cu or Al in steel after, FeO formation temperature Al improves 200 ℃ than Cu, and non-oxidizability obviously improves, in addition, and Al aboundresources, Cu resource-constrained.Its concrete composition (% weight ratio) composed as follows: Cr15.0~16.0, Mn8.0~10.0, Ni3.0~4.0, Al2.0~4.0, C≤0.06, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
The manufacture method of stainless steel wire of the present invention, the processing step of described method is as follows:
Step 1, wire stripping
STAINLESS STEEL WIRE is peelled off to the top layer of certain depth by the method for rotary cut or scraping, the general degree of depth is 0.1-0.15mm, makes the 5.5-10mm wire rod, can eliminate lower column defects:
1, the blemish of wire rod, as crackle, fold, scab etc.;
2, the non-metallic inclusion on nearly surface.
The wire rod that removes blemish can be used for manufacturing high-quality standard component, and the cold-heading yield rate improves more than 5%.
Step 2, wire annealing
Wire rod is carried out to 800-900 ℃ of annealing in process, and the shortcoming that mould is cut the peeling wire rod is that surface can produce a kind of hardened layer, should not directly go drawing and need to soften heat treatment, could further drawing after eliminating stress.
Step 3, epithelium are processed, are dried
Adopt film agent to carry out the epithelium processing to the 5.5-10mm wire surface, then dry at drying oven, furnace temperature 100-150 ℃, the time is 0.5-1.0 hour.
Step 4, rough, in draw, take-up
In the drawing of bull continuous drawing machine, first adopts the large draft of 25%-30%, draft successively successively decreases later, be generally the 6-7 passage rough pull out or the 7-8 passage in after drawing, take-up, the condition of delivery are for gently drawing steel wire, before finished product, the reserved 6%-10% draft of steel wire gently is pulled to the trimmed size size, and soft state steel wire is moved the trimmed size size to.
Step 5, cleaning agent surface treatment, the continuous oven bright annealing
According to user's needs, the condition of delivery is soft state steel wire, adopt the cleaning agent treatment surface after unwrapping wire, then wash, dry up, enter the continuous bright heat-treatment furnace, 1100 ± 10 ℃ of furnace temperature, linear velocity 20m/ divides, after passing into the ammonia decomposition in pipe, and 75H2, the 25%N2 mist is protected stove, water-cooled, washing, oven dry;
Step 6, end product drawing or surperficial coat film and oxalic acid coating are processed
After soft state delivery steel wire brightness heat treatment, warehouse-in is checked, weighs, packed to surperficial coat film or oxalic acid coating after processing; Gently draw the delivery steel wire, carry out after pickling and surperficial coat film or oxalic acid are coated with passing through again the inverted drawing of 6%-10% draft small deformation degree, then check, weigh, pack warehouse-in.
Above-mentioned technical process is controlled following 3 innovative points:
1, in order to improve the cold-heading yield rate, remove wire surface defect and nearly surface inclusion, wire surface is carried out to 0.1-0.15mm peeling processing, be first innovative point of technology controlling and process;
2, producing sclerosis and stress after eliminating wire stripping, wire rod is carried out to 800-900 ℃ of annealing in process, in order to drawing, is second innovative point of technology controlling and process;
3, bright temperature is brought up to 1100 ℃ ± 10 ℃ by general 1050 ℃, can make the fully dissolvings such as alloy cpd AlN, gently pull into the product steel wire and adopt little draft drawing below 10% simultaneously, be beneficial to obtain and be less than 0.70 yield tensile ratio, improve plasticity index percentage elongation and the contraction percentage of area, finally obtain splendid cold upsetting performance, meeting customer requirements is the 3rd innovative point of technology controlling and process.
The specific embodiment
Embodiment 1:
Manufacturing chromium manganese ambrose alloy aluminium is stainless steel.Its chemical composition consists of (% weight ratio): Cr14.0~17.0, Mn7.0~11.0, Ni1.5~5.5, Cu1.50~3.50, Al1.0~4.0, C≤0.06, N≤0.12, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
Technological process:
Batching-electric arc furnace smelting-AOD stove is concise-ladle-tundish-continuous casting-continuous rolling machine-solution treatment-take-up-pickling-bundling-packing-warehouse-in.
1) batching
Clean steel scrap+Cr and Ni old metal+and the slag making materials such as copper scrap+lime etc.; (also available high carbon ferro-chrome and high-carbon ferronickel etc.);
2) electric-arc furnace steelmaking
After batch materials is added to electric arc furnaces successively, the energising heat fused, chemical examination C, Si, Mn, P, S, Cr, Ni, Cu, adjust various chemical compositions again according to result of laboratory test, and slag making, after furnace temperature reaches 1650 ℃, skim, tap;
3) AOD refining furnace
After first furnace molten steel is entered to stove, by be blown into Ar (N2)+O2 mist in stove, converting process is divided into the heat of oxidation, reduction period, concise phase;
Be mainly that C falls in task the heat of oxidation, and terminal, below 0.03%, is skimmed;
Reduction period: add appropriate slag former, lime+CaF2 and Fe-Si, CaSi or A1 powder etc., make reducing slag, and basicity is 2.0~2.2, makes Cr, Mn element reduction, and general Cr, Mn element recovery rate reach 95% left and right; Take off S, the rear de-S that skims leads and reaches 70% simultaneously;
The concise phase: according to result of laboratory test, Cr, Mn, Al composition are adjusted, (because of Cu, the not oxidation substantially of Ni element, recovery rate is generally more than 97%) adjust after composition reach desired value, after liquid steel temperature is controlled at 1700 ± 10 ℃, skim, tap, ladle molten steel can proceed to tundish and carry out continuous casting;
4) continuous casting
Molten steel passes through middle water containing opening---crystallizer---throwing, speed 3M/ divides left and right, and the square billet specification is generally 150mm * 150mm;
5) tandem rolling
After square billet checks, defect is removed, enter again the heating furnace heating after reconditioning, the insulation soaking, furnace temperature reaches 1200 ℃~1250 ℃ open rollings of coming out of the stove, generally by roughing mill-in milling train-finishing mill-Laying head-shrend (1050 ℃~1100 ℃), after solution treatment, take-up, pickling, bundling, weighing, check, packing, warehouse-in.
6) the finished wire rod diameter is 5.5~15mm, and every dish heavily is about 1t~2t.
Embodiment 2:
Manufacturing chromium manganese ambrose alloy aluminium is stainless steel.Its chemical composition consists of (% weight ratio): Cr15.0~16.0, Mn7.5~10.0, Ni3.0~4.0, Cu2.0~3.00, Al1.0~2.0, C≤0.05, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
Technological process: with example 1.
Embodiment 3: manufacturing chromium manganese ambrose alloy aluminium is stainless steel.Its chemical composition consists of (% weight ratio): Cr14.0~15.0, and Mn8.0~9.5, Ni2.0~3.0, Cu1.0~2.0, Al2.0~3.0, C≤0.04, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
Technological process: with example 1.
Embodiment 4: manufacture chromium manganese nickel aluminium series stainless steel.Its chemical composition consists of (% weight ratio): Cr15.0~16.0, and Mn8.0~10.0, Ni3.0~4.0, Al2.0~4.0, C≤0.06, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
Technological process: with example 1.
Embodiment 5:
Manufacturing chromium manganese ambrose alloy aluminium is stainless steel wire.Processing step is as follows:
Step 1, wire stripping
STAINLESS STEEL WIRE is peelled off to the top layer of certain depth by the method for rotary cut or scraping, the general degree of depth is 0.1-0.15mm, makes the 5.5-10mm wire rod.
Step 2, wire annealing
Wire rod is carried out to 800-900 ℃ of annealing in process.
Step 3, epithelium are processed, are dried
Adopt film agent to carry out the epithelium processing to the 5.5-10mm wire surface, then dry at drying oven, furnace temperature 100-150 ℃, the time is 0.5-1.0 hour.
Step 4, rough, in draw, take-up
In the drawing of bull continuous drawing machine, first adopts the large draft of 25%-30%, draft successively successively decreases later, be generally the 6-7 passage rough pull out or the 7-8 passage in after drawing, take-up, the condition of delivery are for gently drawing steel wire, before finished product, reserved 10% draft of steel wire gently is pulled to the trimmed size size, and soft state steel wire is moved the trimmed size size to.
Step 5, cleaning agent surface treatment, the continuous oven bright annealing
According to user's needs, the condition of delivery is soft state steel wire, adopt the cleaning agent treatment surface after unwrapping wire, then wash, dry up, enter the continuous bright heat-treatment furnace, 1100 ± 10 ℃ of furnace temperature, linear velocity 20m/ divides, after passing into the ammonia decomposition in pipe, and 75H2, the 25%N2 mist is protected stove, water-cooled, washing, oven dry;
After step 6, end product drawing or surperficial coat film and oxalic acid coating are processed soft state delivery steel wire brightness heat treatment, warehouse-in is checked, weighs, packed to surperficial coat film or oxalic acid coating after processing; Gently draw the delivery steel wire, carry out pickling and surperficial coat film or oxalic acid be coated with after again through the inverted drawing of 10% draft small deformation degree, then check, weigh, pack warehouse-in.
Embodiment 6:
Manufacture chromium manganese nickel aluminium series stainless steel wire.Processing step is with example 5.
Attached: every the key technical indexes requirement of finished product steel wire
According to stainless steel wire national standard or JISG4315-2000 Japan cold-heading stainless steel silk standard-required for the GB/T4232-93 cold upsetting, the key technical indexes is as follows:
1) dimensions and permissible variation
Steel wire diameter: d=0.8-14.0mm
Permissible variation should meet 10 grades or 9 grades, 8 grades regulations of table 2 in GB/T342.
2) condition of delivery
Carry out surperficial coat film processing after soft state (R) bright annealing;
Gently draw after (Q) bright annealing the drawing of carrying out after surperficial coat film carrying out small deformation.
3) mechanical property
4) surface quality
The smooth cleaning of Steel Wire Surface, must not have using harmful defect.
5) cold upsetting performance
Steel wire should carry out cold forging test, and cold upsetting is to original sample height 1/2nd, and specimen surface must not have crackle and breach.
6) specific (special) requirements
According to customer requirements, the austenite steel wire can be done Huey test, and test method is by the both sides of supply and demand agreement.
Claims (8)
1. the manufacture method of a STAINLESS STEEL WIRE, it is characterized in that: the processing step of described method is as follows:
Step 1, wire stripping---STAINLESS STEEL WIRE is peelled off to the top layer that the degree of depth is 0.1-0.15mm by the method for rotary cut or scraping, make the 5.5-10mm wire rod,
Step 2, wire annealing---wire rod is carried out to 800-900 ℃ of annealing in process,
Step 3, epithelium are processed, are dried---and adopt film agent to carry out the epithelium processing to the 5.5-10mm wire surface, then dry at drying oven, furnace temperature 100-150 ℃, the time is 0.5-1.0 hour,
Step 4, rough, in draw, take-up---drawing on the bull continuous drawing machine, first adopts the large draft of 25%-30%, draft successively successively decreases later, through the 6-7 passage rough pull out or the 7-8 passage in after drawing, take-up, as the condition of delivery, for gently drawing steel wire, before finished product, reserved 10% draft of steel wire gently is pulled to the trimmed size size, as the condition of delivery is that soft state steel wire is directly moved the trimmed size size to.
2. the method for claim 1, wherein after step 4, also comprise: step 5: the cleaning agent surface treatment, the continuous oven bright annealing is soft state steel wire as the condition of delivery, adopt the cleaning agent treatment surface after unwrapping wire, then wash, dry up, enter the continuous bright heat-treatment furnace, 1100 ± 10 ℃ of furnace temperature, linear velocity 20m/ divides, after passing into the ammonia decomposition in pipe, and 75H2, the 25%N2 mist is protected stove, water-cooled, washing, oven dry.
3. the method for claim 1, wherein after described step 5, also comprise step 6: end product drawing or surperficial coat film and the processing of oxalic acid coating are soft state steel wire as the condition of delivery, and to the steel wire brightness heat treatment, surperficial coat film or oxalic acid coating are processed; For gently drawing the delivery steel wire, carry out after pickling and surperficial coat film or oxalic acid are coated with passing through again the inverted drawing of 6%-10% draft as the condition of delivery.
4. a STAINLESS STEEL WIRE, it is characterized in that described stainless chemical component weight percentage consists of: Cr14.0~17.0, Mn7.0~11.0, Ni1.5~5.5, Cu1.50~3.50, Al1.0~5.0, C≤0.06, N≤0.12, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
5. STAINLESS STEEL WIRE according to claim 4, it is characterized in that: described stainless chemical component weight percentage consists of: Cr15.0~16.0, Mn7.5~10.0, Ni3.0~4.0, Cu2.0~3.00, Al1.0~2.0, C≤0.05, N≤0.10, Si≤1.00, P≤0.035, S≤0.015.
6. STAINLESS STEEL WIRE according to claim 4, it is characterized in that: described stainless chemical component weight percentage consists of: Cr14.0~15.0, Mn8.0~9.5, Ni2.0~3.0, Cu1.0~2.0, Al2.0~3.0, C≤0.04, N≤0.10, Si≤1.00, P≤0.035, S≤0.015.
7. a STAINLESS STEEL WIRE, it is characterized in that described stainless chemical component weight percentage consists of: Cr15.0~16.0, Mn8.0~10.0, Ni3.0~4.0, Al2.0~4.0, C≤0.06, N≤0.10, Si≤1.00, P≤0.035, S≤0.015, surplus is Fe and inevitable impurity.
8. the manufacture method of a STAINLESS STEEL WIRE as claimed in claim 4, it is characterized in that: the processing step of described method is as follows: step 1, wire stripping
STAINLESS STEEL WIRE is peelled off to the top layer that the degree of depth is 0.1-0.15mm by the method for rotary cut or scraping, makes the 5.5-10mm wire rod,
Step 2, wire annealing
Wire rod is carried out to 800-900 ℃ of annealing in process,
Step 3, epithelium are processed, are dried
Adopt film agent to carry out the epithelium processing to the 5.5-10mm wire surface, then dry at drying oven, furnace temperature 100-150 ℃, the time is 0.5-1.0 hour,
Step 4, rough, in draw, take-up
Drawing on the bull continuous drawing machine, first adopts the large draft of 25%-30%, draft successively successively decreases later, through the 6-7 passage rough pull out or the 7-8 passage in after drawing, take-up, as the condition of delivery, for gently drawing steel wire, before finished product, reserved 10% draft of steel wire gently is pulled to the trimmed size size, as the condition of delivery is that soft state steel wire is directly moved the trimmed size size to
Step 5, cleaning agent surface treatment, the continuous oven bright annealing is soft state steel wire as the condition of delivery, adopt the cleaning agent treatment surface after unwrapping wire, then wash, dry up, enter the continuous bright heat-treatment furnace, 1100 ± 10 ℃ of furnace temperature, linear velocity 20m/ divides, after passing into the ammonia decomposition in pipe, and 75H2, the 25%N2 mist is protected stove, water-cooled, washing, oven dry;
Step 6, end product drawing or surperficial coat film and the processing of oxalic acid coating are soft state steel wire as the condition of delivery, and to the steel wire brightness heat treatment, surperficial coat film or oxalic acid coating are processed; As the condition of delivery for gently drawing the delivery steel wire, carry out pickling and surperficial coat film or oxalic acid be coated with after after the inverted drawing of 6%-10% draft.
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CN109487172A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | One kind having excellent thermoplastic two phase stainless steel and preparation method thereof |
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CN113198860A (en) * | 2021-04-23 | 2021-08-03 | 江阴市圣曼不锈钢线棒品有限公司 | Wire drawing process of stainless steel wire for spectacle frame |
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CN109234507A (en) * | 2018-09-29 | 2019-01-18 | 瑞安市锦润不锈钢制品有限公司 | A kind of stainless steel products processing technology |
CN109023121A (en) * | 2018-10-11 | 2018-12-18 | 山西太钢不锈钢股份有限公司 | The processing method of ferritic free-cutting stainless steel silk |
CN109023121B (en) * | 2018-10-11 | 2020-08-04 | 山西太钢不锈钢股份有限公司 | Method for processing ferrite free-cutting stainless steel wire |
CN109487172A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | One kind having excellent thermoplastic two phase stainless steel and preparation method thereof |
CN110016620A (en) * | 2019-05-29 | 2019-07-16 | 苏州誉高紧固系统有限公司 | A kind of header bolt high-low temperature resistant ferrite material and its production technology |
CN110157991A (en) * | 2019-05-29 | 2019-08-23 | 苏州誉高紧固系统有限公司 | A kind of cold-heading fastener nut high temperature resistant ferritic stainless steel and its production technology |
CN110157990A (en) * | 2019-05-29 | 2019-08-23 | 苏州誉高紧固系统有限公司 | A kind of high nickel stainless steel material of cold-heading fastener high temperature resistant and its production technology |
CN110791710A (en) * | 2019-11-12 | 2020-02-14 | 江阴康瑞成型技术科技有限公司 | Environment-friendly energy-saving austenite cold-heading stainless steel wire and production process thereof |
CN113198860A (en) * | 2021-04-23 | 2021-08-03 | 江阴市圣曼不锈钢线棒品有限公司 | Wire drawing process of stainless steel wire for spectacle frame |
CN115125378A (en) * | 2022-06-20 | 2022-09-30 | 江苏康瑞新材料科技股份有限公司 | Method for processing high-strength low-magnetic-permeability bar |
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