304 stainless steel coil Production Equipment
20 roller reversible cold rolling mill
Device Description
20 roller reversible cold rolling mill (20 High Sendzimir Mill)
US imports of Sendzimir twenty precision roller mill, automatic plate-type control, on board type, thickness and precision to provide maximum assurance.
US Made Sendzimir Mill With Shape Control System And AGC System, Provding Ultra Thin Strips With Precise Thickness Tolerance.)
Vertical brilliant annealing furnace
Device Description
Vertical brilliant annealing furnace (Continuous Bright Annealing Furnaces)
Imports from Japan vertical furnace, the full range of digital control systems, import and export of advanced seals designed to ensure the perfect quality of the strip surface.
Japan Made Vertical Type Of Birght Annedling Furnaces Equipped With Stat-Of-The-Art Technology To Assure Consistent Annedling Propeerties And Surface Quality.
Tension leveler
Device Description
Tension leveler (Tension Leveler)
Tension Leveler France since the introduction of the production line, so that the strip flatness after leveling achieve the best results.
Introduced From France, The Tension Leveler Has Automatic Flatness Measuring And Control System, Providing With Superior Flatness Of Stripes
Slitting machine and transverse shear
The main cutting thickness 0.05 ~ 1.0mm, the width of 3mm ~ 800mm cold-rolled stainless steel strip, slitting width accuracy up to +/- 0.01mm
Slitter From Taiwan Are Capable Of Slitting Thickness Down To 0.05mm, Processing Minimum Width To 10mm, Width Tolerance +/- 0.01mm.
图片
2014年12月19日星期五
2014年12月16日星期二
Stainless steel coil
stainless steel coil
Stainless HRC: thickness 1.5-15 width 1000 or 1219 or 1500 or 1800 or 2000 (with flash)
Stainless steel cold rolled coil: thickness 0.3-3.0 width 1000 or 1219 or 1500 (with flash)
Stainless steel cold rolled coil: thickness 0.1-3.0 width 500 or 1600 (with flash)
Stainless HRC: thickness 1.5-15 width 1000 or 1219 or 1500 or 1800 or 2000 (with flash)
Stainless steel cold rolled coil: thickness 0.3-3.0 width 1000 or 1219 or 1500 (with flash)
Stainless steel cold rolled coil: thickness 0.1-3.0 width 500 or 1600 (with flash)
2014年12月13日星期六
The role of stainless steel containing elements
Carbon (C)
1. Increase the blade deformation resistance and tensile strength
2. stainless steel suppliers can enhance hardness, improved wear resistance
Chromium (Cr) 1. Increase the hardness, tensile strength and toughness
2. Anti-wear and corrosion
Cobalt (Co) 1. Increase hardness and strength, so that it can withstand high temperatures quenching
2. In more complex alloys used to strengthen the individual characteristics of some other elements
Copper (Cu) 1. Enhanced corrosion resistance
2. Enhanced wear resistance
Manganese (Mn) 1. Increases hardenability, strength and abrasion resistance tensile strength
2. From the molten metal to separate oxidation and vaporization of separating oxygen away
3. When adding a lot to increase the hardness, but to improve the brittleness
Molybdenum (Mo) 1. Enhanced strength, hardness, toughness and hardenability
2. To improve the machinability and corrosion resistance
Nickel (Ni) 1. Enhanced strength, hardness and corrosion resistance
Phosphorus (P) 1. Enhanced efforts machinability and hardness
2. easy to rattle the concentration is too high
Silicon (Si) 1. Enhanced ductility
2. Increase the tensile strength
3. from the molten metal to separate oxidation and vaporization of separated away oxygen
Sulfur (S) 1. Small amounts to improve machinability
Tungsten (W) 1. Increase the intensity, hardness and toughness
Vanadium (V) 1. To increase the intensity, hardness and shock resistance
2. To prevent the generation of particles
1. Increase the blade deformation resistance and tensile strength
2. stainless steel suppliers can enhance hardness, improved wear resistance
Chromium (Cr) 1. Increase the hardness, tensile strength and toughness
2. Anti-wear and corrosion
Cobalt (Co) 1. Increase hardness and strength, so that it can withstand high temperatures quenching
2. In more complex alloys used to strengthen the individual characteristics of some other elements
Copper (Cu) 1. Enhanced corrosion resistance
2. Enhanced wear resistance
Manganese (Mn) 1. Increases hardenability, strength and abrasion resistance tensile strength
2. From the molten metal to separate oxidation and vaporization of separating oxygen away
3. When adding a lot to increase the hardness, but to improve the brittleness
Molybdenum (Mo) 1. Enhanced strength, hardness, toughness and hardenability
2. To improve the machinability and corrosion resistance
Nickel (Ni) 1. Enhanced strength, hardness and corrosion resistance
Phosphorus (P) 1. Enhanced efforts machinability and hardness
2. easy to rattle the concentration is too high
Silicon (Si) 1. Enhanced ductility
2. Increase the tensile strength
3. from the molten metal to separate oxidation and vaporization of separated away oxygen
Sulfur (S) 1. Small amounts to improve machinability
Tungsten (W) 1. Increase the intensity, hardness and toughness
Vanadium (V) 1. To increase the intensity, hardness and shock resistance
2. To prevent the generation of particles
2014年12月9日星期二
Stainless steel coil
Stainless steel coils into austenitic, ferritic, martensitic, duplex (ferritic - austenitic) stainless steel cold rolled and hot rolled stainless steel coil. Stainless Steel: or call tape, coils, coil width is called more, the hardness of the strip, there are many, ranging from tens to hundreds, Customers buy easy to determine what needs to hardness. . (8K mirror luminosity) web width uncertain, there are: 30mm.60mm.45mm.80mm.100mm.200mm etc. also sub-section according to customer requirements from a metallographic point of view, because the stainless steel contains chromium leaving the surface is. chromium thin film, the membrane separating oxygen from inside the steel corrosion invasive role. In order to ensure the yield strength of various types of stainless steel coil, the mechanical properties of tensile strength, elongation and hardness to meet the requirements, you must go through annealing, solution heat treatment, aging heat treatment before delivery, stainless steel coil. The corrosion resistance of stainless steel coil depends on its organizational structure alloy composition (chromium, nickel, titanium, silicon, aluminum, etc.) and stainless steel coil inside, play a major role in the chromium. Chromium has a high chemical stability, can form a passive film on the steel surface, the metal with the outside world to isolate and protect steel from oxidation and increase the corrosion resistance of steel. After the destruction of the passive film, corrosion resistance on the decline. Stainless steel coil is widely used in chemical, food, pharmaceutical, paper, oil, nuclear and other industries, as well as construction, kitchen utensils, cutlery, vehicles, household appliances all kinds of parts.
2014年12月6日星期六
Development and application and development trend of stainless steel products
Global magnetic stainless steel sheets production, about 76% belong to the 300 series, which the international nickel price fluctuations in the price of nickel chromium stainless steel is considerable. Between the past year, prices of raw materials nickel, nickel-chromium makes relatively substantial growth in steel costs, leading consumers to have to actively look for alternatives, some of the market has also been replaced by alternatives. In recent years, low chromium stainless steel and nickel-based stainless steel (such as 200 series) development gradually by the parties seriously. Looking to the future, the proportion of low-chromium-nickel stainless steel and consumption will have to increase.
200 series stainless steel (Cr-Mn-Ni system)
Serious shortage of nickel supply during World War II, the German first developed manganese - nitrogen instead of part of the nickel stainless steel. 1950s, the United States is also the raw material due to the shortage of nickel, after in-depth research, successfully developed a series of high-manganese austenitic stainless steel or 200 stainless steel. 200 Series commonly used steel comprising: AISI 201 (16% ~ 18% Cr, 5.5% ~ 7.5% Mn, 3.5% ~ 5.5% Ni, <0.25% N), 202,205 and Indian J1, J4 (containing Cu) other costs 25% lower than the 304 for the general purposes of weak corrosive environments such as utensils, kitchenware, interior decoration, etc., poor welding performance. Recently, the US developed 204Cu (3% Cu), compared with 304 stainless steel, high strength, cold performance is more excellent corrosion resistance and 304 rather, it is possible to replace 304 become widely used stainless steel variety.
400 series stainless steel
400 series traces the development trend of adding Nb, Ti, Cu, Al improving deep drawability, weldability, corrosion resistance, antimicrobial resistance and high temperature strength, etc., can be partially replaced by 304, the main steel grades: SUS430LX, 430JIL, 444 , 445M2, NSS 477M1 and so on. United States and Japan have been widely used in automotive exhaust pipe (409, 410), the washing machine drum (430), kitchenware, household appliances, medical equipment, water heaters, roofs, walls, plants and so on.
Duplex stainless steel
Duplex stainless steel 301 is high chromium low nickel stainless steel, both austenitic stainless steel with excellent toughness and weldability of ferritic stainless steel high yield strength and resistance to chloride stress corrosion, the largest amount of SAF 2205. To reduce the development trend of duplex stainless steel nickel, manganese and nitrogen increase. The second generation of duplex stainless steel Avesta representatives. Bolalite developed LDX2101. Corrosion resistance is equivalent to 316, the intensity is 304 twice, the mechanical properties and 2205 equivalent potential applications comprising: steel, bridges, tankage, containers, train structure, water heaters and the like.
200 series stainless steel (Cr-Mn-Ni system)
Serious shortage of nickel supply during World War II, the German first developed manganese - nitrogen instead of part of the nickel stainless steel. 1950s, the United States is also the raw material due to the shortage of nickel, after in-depth research, successfully developed a series of high-manganese austenitic stainless steel or 200 stainless steel. 200 Series commonly used steel comprising: AISI 201 (16% ~ 18% Cr, 5.5% ~ 7.5% Mn, 3.5% ~ 5.5% Ni, <0.25% N), 202,205 and Indian J1, J4 (containing Cu) other costs 25% lower than the 304 for the general purposes of weak corrosive environments such as utensils, kitchenware, interior decoration, etc., poor welding performance. Recently, the US developed 204Cu (3% Cu), compared with 304 stainless steel, high strength, cold performance is more excellent corrosion resistance and 304 rather, it is possible to replace 304 become widely used stainless steel variety.
400 series stainless steel
400 series traces the development trend of adding Nb, Ti, Cu, Al improving deep drawability, weldability, corrosion resistance, antimicrobial resistance and high temperature strength, etc., can be partially replaced by 304, the main steel grades: SUS430LX, 430JIL, 444 , 445M2, NSS 477M1 and so on. United States and Japan have been widely used in automotive exhaust pipe (409, 410), the washing machine drum (430), kitchenware, household appliances, medical equipment, water heaters, roofs, walls, plants and so on.
Duplex stainless steel
Duplex stainless steel 301 is high chromium low nickel stainless steel, both austenitic stainless steel with excellent toughness and weldability of ferritic stainless steel high yield strength and resistance to chloride stress corrosion, the largest amount of SAF 2205. To reduce the development trend of duplex stainless steel nickel, manganese and nitrogen increase. The second generation of duplex stainless steel Avesta representatives. Bolalite developed LDX2101. Corrosion resistance is equivalent to 316, the intensity is 304 twice, the mechanical properties and 2205 equivalent potential applications comprising: steel, bridges, tankage, containers, train structure, water heaters and the like.
2014年12月3日星期三
Advantages and disadvantages of the three stainless steel polishing methods
1, the mechanical polishing.
The advantage is processed parts leveling good, high brightness. The disadvantage is labor-intensive, polluting, and complex parts can not be processed, and its luster is not consistent, gloss retention time is not long, nausea, rust. More suitable for processing simple pieces, medium and small products.
2, chemical polishing.
The advantage is less investment in processing equipment, complex parts can throw, high speed, high efficiency, good corrosion resistance. The disadvantage is that the brightness difference, a gas spill, require ventilation, heating difficulties. Suitable for processing small quantities of complex parts and small parts brightness less demanding products.
3, electrochemical polishing
The advantage is to maintain long specular gloss, process stability, low pollution, low cost, good corrosion resistance. The disadvantage is that pollution is high, a large one-time investment in processing equipment, complicated thing to tooling, auxiliary electrode, mass production facilities also need to cool down. Suitable for mass production, mainly used in high-end products, the export of products, there is a tolerance of products, which process is stable, easy to operate.
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2014年11月30日星期日
Stainless steel grinding instructions
stainless steel 304 csp parts to achieve surface quality and precision requirements, usually grinding methods. Due to the large stainless steel toughness, thermal conductivity, low elastic modulus, so there are problems in the grinding often:
1) easy to adhere to clog the wheel; 2) the machined surface is easy to burn;
3) hardening serious; 4) of the workpiece deformation.
Difficult to see, select and grinding wheel grinding fluid directly affects the efficiency and precision. This paper jam affecting adhesion and surface roughness factors were studied.
2 Experimental conditions and methods
Specimen material selection 1Gr18Ni9Ti, its mechanical properties: σb = 530MPa, σ = 40%, hardness HB = 187 specimen size diameter φ50mm, length 300mm, φ50 cylindrical surface of fine cars, both ends of the plane hit the center hole. Experiments on MGB1420 cylindrical grinder, grinding wheel for P400 × 40 × 203, cylindrical grinding grinding way, in order to improve the reliability of the test results, repeat the test, observe the average effect, eliminate the influence of random factors, while try to keep the grinding conditions are basically the same, by changing the wheel size, hardness, abrasives, grinding fluid replacement, grinding to examine the impact on the amount of grinding effect.
3 experimental results
3.1 wheel size affect adhesion rate
Selection of corundum, hardness K, respectively, for the four wheel size 36,46,60,80 number of specimens were cylindrical grinding, grinding length of 600mm, detection adhesion rate, the finer the grinding wheel, stick attached to the more serious, this is due to the presence of voids between the grains, the grinding chips can be stored in the voids; and finer grinding wheel, voids smaller chip space quickly lose the wheel, causing blockage.
3.2 Effect of the adhesion rate of wheel hardness
Selection of the abrasive is fused aluminum oxide, particle size 46, hardness was H, J, K, L grade wheel, the specimen grinding, grinding stroke 600mm, detection adhesion rate. The higher the hardness of the wheel, the more severe adhesion. This is due to the low hardness of the grinding wheel, abrasive grains in the grinding force, easy to fall off from the wheel surface, the formation of new chip space, easy to plug.
The impact on the adhesion rate of 3.3 abrasive
Commonly used abrasive wheel has two kinds of corundum and silicon carbide green, experiments show that the impact of the two abrasive adhesion rate, the difference is not big, green silicon carbide can reduce the sticking slightly because of the crisp and sharp.
3.4 Effect of the surface roughness of grinding fluid
Respectively, using the three liquid emulsion, an inorganic salt grinding fluid and oil-based grinding fluid, was added sulfur, chlorine and other extreme pressure additives, observed after processing of the workpiece surface roughness, the flow rate of the grinding liquid is 20L / min, the grinding stroke of 600mm, the experimental results shown in Table 3.
As can be seen, the surface tension, containing extreme pressure additives, surface quality obtained by grinding. Rational use of grinding liquid, can improve heat dissipation, the grinding liquid can grinding debris and abrasive shedding flush, while in the metal surface to form a film, a lubricant, reducing surface roughness.
3.5 The amount of influence on adhesion rate of grinding
Workpiece speed, feed rate and grinding depth has little effect on the process, can be seen from Table 2, changing the depth of grinding, has little effect on the adhesion rate.
4. Conclusion
1) Stainless steel factory grinding, reducing wheel adhesion blocking is an important factor to improve grinding efficiency, processing should always trim wheel, keep a sharp cutting edge.
2) stainless steel grinding wheel selection of good self-sharpening wheel is the main objective, generally used in low hardness of the wheel is good, but you can not select the hardness is too low, otherwise the grains did not blunt it off. J recommended use level.
3) To reduce the grinding wheel adhesion obstruction, should be used in coarse-grained wheel. When coarse granularity with the No. 36, 46, when the choice of 60 grit grinding.
4) When the grinding of stainless steel, the use of GC grinding wheel improves the grinding efficiency.
5) grinding fluid selection must take into account the role of lubrication and cleaning of two, adequate supply, the choice of the surface tension, the emulsion containing extreme pressure additives, a high surface quality.
6) Select the amount of grinding allowance can be determined based on.
7) during the experiment found that the wheel organization and binders have some influence on the grinding process of stainless steel, is currently restricted by experimental means, pending further study.
1) easy to adhere to clog the wheel; 2) the machined surface is easy to burn;
3) hardening serious; 4) of the workpiece deformation.
Difficult to see, select and grinding wheel grinding fluid directly affects the efficiency and precision. This paper jam affecting adhesion and surface roughness factors were studied.
2 Experimental conditions and methods
Specimen material selection 1Gr18Ni9Ti, its mechanical properties: σb = 530MPa, σ = 40%, hardness HB = 187 specimen size diameter φ50mm, length 300mm, φ50 cylindrical surface of fine cars, both ends of the plane hit the center hole. Experiments on MGB1420 cylindrical grinder, grinding wheel for P400 × 40 × 203, cylindrical grinding grinding way, in order to improve the reliability of the test results, repeat the test, observe the average effect, eliminate the influence of random factors, while try to keep the grinding conditions are basically the same, by changing the wheel size, hardness, abrasives, grinding fluid replacement, grinding to examine the impact on the amount of grinding effect.
3 experimental results
3.1 wheel size affect adhesion rate
Selection of corundum, hardness K, respectively, for the four wheel size 36,46,60,80 number of specimens were cylindrical grinding, grinding length of 600mm, detection adhesion rate, the finer the grinding wheel, stick attached to the more serious, this is due to the presence of voids between the grains, the grinding chips can be stored in the voids; and finer grinding wheel, voids smaller chip space quickly lose the wheel, causing blockage.
3.2 Effect of the adhesion rate of wheel hardness
Selection of the abrasive is fused aluminum oxide, particle size 46, hardness was H, J, K, L grade wheel, the specimen grinding, grinding stroke 600mm, detection adhesion rate. The higher the hardness of the wheel, the more severe adhesion. This is due to the low hardness of the grinding wheel, abrasive grains in the grinding force, easy to fall off from the wheel surface, the formation of new chip space, easy to plug.
The impact on the adhesion rate of 3.3 abrasive
Commonly used abrasive wheel has two kinds of corundum and silicon carbide green, experiments show that the impact of the two abrasive adhesion rate, the difference is not big, green silicon carbide can reduce the sticking slightly because of the crisp and sharp.
3.4 Effect of the surface roughness of grinding fluid
Respectively, using the three liquid emulsion, an inorganic salt grinding fluid and oil-based grinding fluid, was added sulfur, chlorine and other extreme pressure additives, observed after processing of the workpiece surface roughness, the flow rate of the grinding liquid is 20L / min, the grinding stroke of 600mm, the experimental results shown in Table 3.
As can be seen, the surface tension, containing extreme pressure additives, surface quality obtained by grinding. Rational use of grinding liquid, can improve heat dissipation, the grinding liquid can grinding debris and abrasive shedding flush, while in the metal surface to form a film, a lubricant, reducing surface roughness.
3.5 The amount of influence on adhesion rate of grinding
Workpiece speed, feed rate and grinding depth has little effect on the process, can be seen from Table 2, changing the depth of grinding, has little effect on the adhesion rate.
4. Conclusion
1) Stainless steel factory grinding, reducing wheel adhesion blocking is an important factor to improve grinding efficiency, processing should always trim wheel, keep a sharp cutting edge.
2) stainless steel grinding wheel selection of good self-sharpening wheel is the main objective, generally used in low hardness of the wheel is good, but you can not select the hardness is too low, otherwise the grains did not blunt it off. J recommended use level.
3) To reduce the grinding wheel adhesion obstruction, should be used in coarse-grained wheel. When coarse granularity with the No. 36, 46, when the choice of 60 grit grinding.
4) When the grinding of stainless steel, the use of GC grinding wheel improves the grinding efficiency.
5) grinding fluid selection must take into account the role of lubrication and cleaning of two, adequate supply, the choice of the surface tension, the emulsion containing extreme pressure additives, a high surface quality.
6) Select the amount of grinding allowance can be determined based on.
7) during the experiment found that the wheel organization and binders have some influence on the grinding process of stainless steel, is currently restricted by experimental means, pending further study.
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