Because of the differences in chemical composition and make them the 316 stainless steel plate corrosion resistance of different, generally stainless steel is generally not resistant to chemical corrosion medium, and acid is commonly have stainless steel. The word "stainless steel" is not merely refers to a pure stainless steel, but shows that more than one hundred kinds of stainless steel industry, the development of each stainless steel has the function of in their specific applications. The key to the success of the first is to clarify the purpose, and then confirm the right material. And building construction applications about the steel grade, in general, as long as six. They all contain chromium 17 ~ 22, good steel contains nickel. Increase molybdenum can further improve the atmospheric corrosion resistance, especially containing chloride atmospheric corrosion resistance.
High temperature resistant stainless steel tube heat treatment x52 line pipe process of heating overheating super easy to cause the austenitic grain bulky, bring down the data of mechanical properties. Heating temperature is too high for high temperature stainless steel pipe generally overheated, or under the high temperature holding time is too long, cause the austenitic grain coarsening called overheating. The coarse austenite grain to cause a decline in strong tolerance of high temperature resistant stainless steel, the brittle change temperature, increase deformation of quenching cracking tendency. And the cause of overheating temperature appearance is out of control. Overheating by annealing, normalizing or repeated after high temperature tempering, under normal circumstances from austenite to grain refinement. Genetic: high temperature resistant stainless steel pipe fracture overheating of stainless steel material, from the beginning after quenching, austenitic grain refinement can make, but sometimes still appear rough granular fracture. Fracture of the genetic theory disputes more, generally thought for heating temperature is too high and make the sundries such as MnS into austenite and enrichment for the interface, and high temperature resistant stainless steel pipe cooling when the inclusions and separated along the crystal interface, easy when rough along austenite grain boundary faults.
3 m products (including) above must be ordered to pay attention to 316ti stainless steel the issues of delivery when the contract. Highway or general viaduct the constraints of the height of 4.5 meters. Flange is 3 meters in diameter, then add the truck itself is about 1.5 meters height, will be in vain. If the horizontal transport, 3 m's large flange will beyond the width of the driveway, so both in the vertical transport perhaps across the full is a problem. Distribution problem solving owe good, will be on the shipping form is bound to be difficult. Extra large flange with segmented from to the end of the process. And then to the construction site for Mosaic.
Besides using steel as the material produces reducer, the size of the head can also be used for the part code steel plate stamping forming technology to produce. Stretching die shapes used by reference to head inside surface scale planning, use after blanking punching die, stamping steel stretch forming.
When heated, resistance to high temperature in the surface of stainless steel, iron and alloy elements and medium oxygen, carbon dioxide, high temperature resistant stainless steel pipe, such as water vapor reaction occurred oxide film phenomenon known as oxidation. Heat the workpiece dimension accuracy and surface brightness deterioration after oxidation, with poor oxidation film of hardenability stainless steel quenching soft point is seen. In order to prevent oxidation and reduce decarburization are: surface coating, stainless steel solenoid valve steel foil packing seal selection of heating, salt bath furnace heating, protective atmosphere heating (e.g., after purification, the languid is lazy, control of carbon potential in furnace), flame incinerator (furnace gas in reducing). Hydrogen embrittlement phenomenon of high-strength stainless NSK in rich hydrogen atmosphere heated plastic and patience decline phenomenon known as the hydrogen embrittlement. High temperature stainless steel pipe in hydrogen embrittlement of workpiece by hydrogen in addition to processing (such as tempering, aging, etc.) can also eliminate hydrogen embrittlement, choose vacuum, low hydrogen atmosphere or lazy atmosphere heating can prevent hydrogen embrittlement.
