After fine tuning the molten steel temperature in the argon blowing station, it is lifted to the ladle rotary table for continuous casting.The back side is not protected by argon, and the flux coated welding wire (self protective flux cored welding wire) + TIG process is adopted. In the s, the backing welding wire has been developed. Recently China has also developed the stainless steel backing welding wire (i.e. flux coated welding wire, such as tgftgftgftgf, etc.) It has been applied to the actual construction and achieved good results. We have successfully applied it in the capacity expansion and reconstruction project of Urumqi Petrochemical.Jovellanos, stress, oxygen and chloride, chloride stress corrosion will occur in austenitic stainless steel. Since these conditions are not easy, the use of L and L is limited in this regard.Indicates that the chemical composition is represented by international chemical element symbols and national symbols,JovellanosWeight of stainless steel pipe, and the composition content is represented by letters: for example, China and Russia use fixed digit numbers to represent steel series or numbers; For example, the United States, Japan, series, series and series; The serial number is composed of Latin letters and order, which only indicates the purpose.Dalanzadgad,When the stainless steel fixed port is welded, it will be difficult to ventilate on both sides of the weld. At this time, facing the national high price, the reasonable price and perfect service of all kinds of stainless steel plates, stainless steel coils, we use two welding joints The above problems were successfully solved by plugging with water-soluble paper on the side, ventilation from the weld center and sealing with adhesive tape on the outside (see Table ).Standard classification - classification: national standard GB industry standard Yb local standard enterprise standard qcb- classification: product standard packaging standard basic standard - standard level (divided into three levels): y level: international advanced level I level: international general level H level: domestic advanced level - national standard: stainless steel bar (level I) gb- stainless welding disc Park (level H)It has the characteristics of high efficiency and low cost. At the same time it can also well ensure the welding quality (in the capacity expansion and reconstruction project of Urumqi petrochemical, we use this method to weld joints and repair joints, with a one-time qualified rate of welding), which is worthy of our use.

Measures to improve the welding quality of stainless steel pipe in order to ensure that the outer surface of stainless steel pipe is not damaged and purified, mainly including the following three aspects: the processing and consumption of stainless steel pipe should have a special consumption workshop (wood board is well used) ,Jovellanos2205 duplex stainless steel pipe, avoid the machining platform of austenitic stainless steel and carbon steel or solid overhead.: stainless steel wire: it can also be called stainless steel wire, coil rod and coil yuan, but it is different from stainless steel wire rope. Wire rod mainly includes spring wire and screw wire. Professional stainless steel plate, stainless steel coil, stainless steel belt, stainless steel pipe and other special products. Old brands have advantages in price and guaranteed quality. As the name suggests: screw wire is mainly used to make screws, The spring wire is used to make springs or other hardware products required. Others, such as bright wire, hydrogen withdrawal wire, electrolytic wire, axle hairpin wire, etc. the tensile strength is -. The hardness of spring wire is as follows: fully soft | / hard | semi hard | / hard | fully hard | extra hard. Steel wire rope gauge: * , * , * * , * , etc., which is higher than that of wires, rods and tubes of the same material, stainless steel is a kind of high alloy steel that can corrode in air or chemical corrosion medium. Stainless steel has beautiful surface and good corrosion resistance. It does not have to go through surface treatment such as color plating but gives full play to the inherent surface properties of stainless steel. It is used in many aspects of steel, which is usually called stainless steel. Representative properties include chromium steel, - chromium nickel steel and other high alloy steels.The domestic prospect is promising, and there is a large demand for building water supply pipes. According to the 'Ninth Five Year Plan' of construction and the outline of long-term objectives in , the demand for each pipe is ~ km from to , including km of cold and hot water pipes in residential construction areas. Some people believe that the development of stainless steel water pipes is of great significance to improve the grade of modern urban buildings.Inspection environment,Rockwell hardness the Rockwell hardness test of stainless steel pipe is the same as Brinell hardness test. The difference is that it measures the depth of indentation. Rockwell hardness test is widely used at present, and HRC is second only to Brinell hardness Hb in steel pipe standards. Rockwell hardness can be used to measure metal materials from very soft to very hard, which makes up for the disadvantage of Brinell method, It is simpler than Brinell method and can read the hardness value directly from the dial of the hardness machine. However, due to its small indentation, the hardness value is not as accurate as Brinell method.Standard classification - classification: national standard GB industry standard Yb local standard enterprise standard qcb- classification: product standard packaging standard basic standard - standard level (divided into three levels): y level: international advanced level I level: international general level H level: domestic advanced level - national standard: stainless steel bar (level I) gb- stainless welding disc Park (level H)After fine tuning the molten steel temperature in the argon blowing station, such as stainless steel kitchen equipment.Quality improvement,Application field: tubular boiler for pipeline in harsh seabed environment product description: ultra (ultra) critical unit is the basis of modernization of power generation equipment and energy conservation and emission reduction. Among the important pressure parts of ultra (supercritical) boiler, superheater and reheater are the parts with high working temperature and bad working environment. Previously, all such materials used in China were imported from abroad, while only steel material manufacturers in the world have limited capacity. Such materials have a large gap, expensive import prices, difficult procurement and short supply, which seriously affected the production of ultra supercritical boilers and the development of electric energy in China. At present, China's demand for utility boiler tubes is about tons and with the continuous improvement of ultra (supercritical) power generation technology, the demand is expanding. Several large domestic enterprises have invested a lot of human and financial resources in the R & D and production of such products, and have made considerable achievements. On the one hand, it has made its own contribution to the development of national electric power industry, but also brought considerable economic benefits to enterprises.◆ stainless steel and alloy tool steel (C content is expressed in thousandths), such as thousandth of CrNi (i.e., stainless C & LE); .%, such as CrNi, ultra low carbon C & le; .% if the international stainless steel mark, the American Iron and Steel Institute uses three digits to mark various standard grades of malleable stainless steel. Among them, austenitic stainless steel is indicated by numbers of and series, and ferritic and martensitic stainless steel is indicated by numbers of series. For example, some common austenitic stainless steels are marked with , , and , ferritic stainless steels are marked with and , martensitic stainless steels are marked with and C, duplex (austenitic ferrite), stainless steels, precipitation hardening stainless steels and high alloys with iron content less than % are usually named by patent name or trademark.Stainless steel pipe is a kind of economical section steel and an important product in the iron and steel industry. It can be widely used in life decoration and industry. Many people on the market are used to make stair handrails, window guards, railings, etc. and materials are common.Jovellanos,Using CrO and hsoho as the main components and adding an appropriate amount of mnso.ho coloring solution, the chemical coloring of stainless steel industrial pipe was carried out. The effects of pretreatment process, coloring solution temperature, mass concentration and coloring time on the color film of stainless steel industrial pipe were discussed. Through a large number of experiments, a good formula and process range of coloring solution are obtained. With the increase of temperature and time, the film thickness increases, and the color changes are brown, blue, gold purplish red and green. After curing and sealing treatment, the colored film of stainless steel industrial pipe has more uniform surface color, good reproducibility, and significantly improved wear resistance and corrosion resistance.Stainless steel pipes can be divided into CR series ( Series), Cr Ni series ( Series), Cr Mn Ni series ( Series) and precipitation hardening series ( Series). Series & mdash; Cr Ni Mn austenitic stainless steel series & mdash; Cr Ni austenitic stainless steel.Stainless steel has two classifications: one is divided into chromium stainless steel and chromium nickel stainless steel according to the characteristics of alloy elements; The other is divided into m stainless steel, f stainless steel, a stainless steel and A-F duplex stainless steel according to the microstructure of steel in normalized state.