1018 stainless
304ti stainlesthe steady-state creep rate of stainless steel pipe under high temperature and stress is the key index of the material, and can be extrapolated. The following are the test results of stainless steel pipe under different test conditions. The results show that the steady-state creep rate of stainless steel pipe sample is in the order of magnitude after creep at 550 ℃ (90mpa600 ℃ (85mpa) for 500h; when the temperature condition increases to 650 ℃ (the stress decreases to 70MPa), the creep performance of stainless steel pipe sample is good, and the steady-state creep rate is in the order of magnitude; when the temperature further increases to 700 ℃ (the temperature creep rate of 65mpa stainless steel pipe sample increased to 800 ℃ (65mpa steady-state creep rate reaches the maximum value under several test conditions, s creep deformation rate does not increase the material maintains a low level of creep rate. Under 650 ℃ 70MPa, and creep fracture occurs under this condition Compared with several other common structural materials, it can be seen that the creep performance of several materials is better than that of ordinary materials under all test conditions. After 500 hours of test, the total strain does not exceed 0.12%. The curve is relatively stable and the fluctuation is small, indicating that the test data is stable and reliable. Stainless steel pipes are widely used because of their excellent corrosion resistance It is widely used in petrochemical industry,BA stainless steel pipe, pipeline transportation and other working conditions with strong corrosive media. The main reason for the corrosion resistance of stainless steel pipes is the addition of a large number of elements CrNi, and Cr is the main element determining the corrosion resistance of stainless steel pipes. The electrode potential of stainless steel pipes jumps with the increase of Cr content. However,Stainless steel belt, stainless steel pipes are in the subsequent heat treatment During the treatment, Cr element will precipitate into the matrix in the form of carbide. On the one hand, the hardness of Cr carbide is larger than that of the matrix, and the service wear process can improve the wear resistance of stainless steel pipe. On the other hand, the precipitation of Cr containing carbide will lead to Cr Element dilution zone in some parts of the matrix, increase the number of batteries of the material, reduce the electrode potential of stainless steel pipe and reverse the corrosion Therefore, in order to obtain good corrosion and wear resistance, the combination of mechanical properties and corrosion resistance of stainless steel pipe materials needs to be considered. At present, some scholars have studied the effects of austenitizing temperature and time tempering temperature and time on the mechanical properties of stainless steel pipe by heat treatment to change the corrosion resistance of stainless steel pipe And corrosion resistance, it is found that austenitizing temperature can change mechanical properties, but has little effect on corrosion performance, It is concluded that low-temperature nitriding forms a diffusion layer on the surface of the material, improves the wear resistance of the material, interacts with Cr and chemically stable phase 07-fe3n to improve the corrosion resistance of the material.
Hot dip galvanized sheet hot dip galvanized sheet, which immerses the sheet into the molten zinc bath to make its surface adhere to a layer of zinc. It is mainly produced by continuous galvanizing process, that is, the rolled steel plate is continuously immersed in the zinc melting bath to make galvanized steel plate. Liaocheng Suntory stainless steel plate weighing method: 304 stainless steel plate: thickness (mm) x width (m) x Length (m) x density 316 stainless steel plate: thickness (mm) x width (m) x Length (m) x density 430 stainless steel plate: thickness (mm) x width (m) x Length (m) x density stainless steel basic weight (density)
.In order to ensure the appearance quality of continuous casting slab, select appropriate maintenance slag; During continuous casting, the vibration marks formed on the surface of continuous casting slab due to the vibration of mold shall be; Electromagnetic stirring must be used in continuous casting of ferritic stainless steel pipe fittings.
Cold rolled oriented silicon steel strip (sheet) represents: 100 times of DQ + iron loss value (at the frequency of 50Hz, the waveform is sinusoidal, and the magnetic induction peak value is the unit weight iron loss value of 7T) + 100 times of thickness value. Sometimes, G is added after the iron loss value to represent high magnetic induction. For example, dq133 represents cold rolled oriented silicon steel strip (sheet) with iron loss value of 3 and thickness of 0.3mm. Now the new model is 30q133.
.Performance supplement: main components: 22cr-3ni-2mo-0.16n; national standards: NAS 329j3uns S3 / s3180din / en 446astm a240, ASME sa-240; mechanical properties: tensile strength: & sigma; B & Ge; 0mpa; elongation: & Delta; & Ge; 25%; typical working conditions: 20% dilute below 60 ℃, annual corrosion rate & amp; lt; 0.1mm; supporting welding wire: er2209. Weight (kg) = length (m) * width (m) * thickness (mm) *Density value specific gravity of stainless steel: ● chromium stainless steel is 75t / m3 ● chromium nickel stainless steel is 93t / m3 ● iron is 87T / m3. Theoretical weight calculation formula of stainless steel plate: Steel theoretical weight length (mm) & times; width (mm) & times; thickness (mm) & times; density value = weight (kg) Stainless steel plate, stainless steel, duplex stainless steel, stainless steel material, Swedish stainless steel brand. The difference between duplex stainless steel plate and austenitic stainless steel plate is that the yield strength is higher than that of ordinary austenite
The width of coiled material is variable, including 30mm.60mm.45mm.80mm.100mm.200mm, etc. it can also be divided according to customer requirements
7. Distinguish between 316L and 304L. There are two kinds of commonly used stainless steel 30316l (or corresponding to the German / European standard 430844036l, the main difference in chemical composition between 316L and 304 is that 316L contains Mo, and it is generally recognized that 316 has better corrosion resistance than 304 in high temperature environment. Therefore, engineers generally choose 316L parts in high temperature environment. However, there is no absolute thing. In concentrated environment,Color stainless steel plate factory, 316L should not be used at any higher temperature! No However, this is a big problem. People who study mechanics have all studied threads. Remember a black solid agent that needs to be applied to prevent threads from biting under high temperature: molybdenum disulfide (MOS), from which two conclusions are drawn: No: [1] Mo is indeed a high resistance material (know what crucible gold is melted in? Molybdenum crucible!). [2] : molybdenum can easily react with high valence sulfur ions to form sulfide. Therefore, no stainless steel is super corrosion resistant. In the final analysis, stainless steel is a steel with more impurities (but these impurities are more corrosion resistant than steel). If it is steel, it can react with other substances.
(soft, 1 / 23 / 4h) and other primary and secondary stainless steel coils.
Stainless steel pipes can be divided into CR series (400 Series), Cr Ni series (300 Series), Cr Mn Ni series (200 Series) and precipitation hardening series (600 Series). 200 Series & mdash; Cr Ni Mn austenitic stainless steel 300 series & mdash; Cr Ni austenitic stainless steel.
Under plasma arc cutting corrosion conditions, there are dust containing other metal elements or attachments of dissimilar metal particles on the surface of stainless steel. In the air, the condensate between the attachments and stainless steel connects them into a micro battery, which causes electrochemical reaction and the protective film is affected, which is called electrochemical corrosion.
equipment maintenance .
Usage: it is widely used in automobile industry aviation industry and other departments.
Cold rolled steel strip for deep drawing is a low-carbon high-quality carbon structural steel cold-rolled steel strip for deep drawing complex drawing parts.
Surface treatment difference: surface treatment is usually divided into polishing, wire drawing and wire drawing, and the cost is about 1 yuan and 1 meter. If it is thrown into the lens barrel, the cost per ton will increase by 3000 yuan.
Quality risk.There are ba face, 2b face, (white skin), 2D face, (frosted), HL (wire drawing), 8K face and other surfaces with good quality and brightness.
Several kinds of stainless steel backing welding used for stainless steel backing welding usually adopt TIG process. According to the actual situation of the site, professional L stainless steel pipe, s stainless steel pipe, 20 old brands, with advantages in price and guaranteed quality. We can use the following four kinds of backing welding.
Stainless steel pipe is a long strip of steel with hollow section and no joints around it. The thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the higher its processing cost will be.
.Theoretical weight: Cr Ni austenitic stainless steel austenitic stainless steel (kg / M) s-wall thickness (mm)
The stainless steel strip is supplied in coils, also known as strip steel. It is divided into hot rolling and cold rolling, as well as ordinary steel strip and high-quality steel strip. There are many kinds of stainless steel belts! Wide use! There are: 201 stainless steel belt, 202 stainless steel belt, 304 stainless steel belt, 301 stainless steel belt, 302 stainless steel belt, 303 stainless steel belt, 316 stainless steel belt, J4 stainless steel belt, 309S stainless steel belt, 310S stainless steel belt 317L stainless steel belt, 430 stainless steel iron belt, etc! Thickness: 0.02mm-4mm, width: 5mm-1550mm, can be customized without standard!
If you want to choose a high-quality stainless steel pipe water supply pipe, you should first see whether its material is superior. Stainless steel is a material with strong corrosion resistance and high sanitation and cleanliness. Not only the outer wall is very beautiful, but also very smooth. There will be obvious differences in material first in terms of incision and whether the stainless steel pipe water supply pipe is good or bad.