Machining Stainless Steel
Product Item: Machining Stainless Steel
Category: Stainless Steel Machining
The stainless steel machining process refers to the process of cutting, folding, bending, welding and other mechanical machining of stainless steel materials to finally obtain the stainless steel products required for industrial production. In the process of stainless steel processing requires a large number of machine tools, lathes, wire cutting machines, milling machines, punch presses, sheet metal, instruments, surface treatment, stainless steel processing equipment.
project
The stainless steel machining process refers to the process of cutting, folding, bending, welding and other mechanical machining of stainless steel materials to finally obtain the stainless steel products required for industrial production. In the process of stainless steel processing requires a large number of machine tools, lathes, wire cutting machines, milling machines, punch presses, sheet metal, instruments, surface treatment, stainless steel processing equipment.
Technology
Stainless steel machining process for stainless steel stamping, cutting, turning, milling, grinding, light, shear, folding, bending, welding and other mechanical processing finally get the industrial production of stainless steel parts required in the process of stainless steel processing requires a lot of Machine tools, instruments, stainless steel processing equipment.
Different types of stainless steel due to the different mechanical properties and chemical composition, the difficulty of CNC cutting is not the same. Some stainless steel in the cutting process, it is difficult to achieve a satisfactory surface roughness; In some stainless steels, although the required surface roughness is easily achieved, the cutting tools are particularly susceptible to wear during the cutting process.
Stainless steel is characterized by: stainless steel adhesion and strong melting, chips tend to stick to the teeth of the milling cutter and deteriorate cutting conditions; When milling, the cutter first slide on the hardened surface, increasing the tendency of work hardening; Milling impact and vibration are relatively large, making the cutter teeth easy to chip and wear. Milling stainless steel in addition to the end mill can be used carbide milling cutter material, the other types of milling cutters are high speed steel, in particular, tungsten - molybdenum and high vanadium high speed steel has a good effect, the tool durability comparable to W18Cr4V Increase 1 to 2 times.
Precautions
(1) Main components of stainless steel: generally contain high-quality metallic elements such as chromium (Cr), nickel (Ni), molybdenum (Mo), and titanium (Ti).
(2) common stainless steel: chromium stainless steel, containing Cr ≥ 12% or more; nickel-chromium stainless steel, containing Cr ≥ 18%, with Ni ≥ 12%.
(3) Classification from stainless steel metallurgical structure: There is austenitic stainless steel, for example: 1Cr18Ni9Ti, 1Cr18Ni11Nb, Cr18Mn8Ni5. Martensitic stainless steel, such as: Cr17, Cr28 and so on. Commonly referred to as non-magnetic stainless steel and magnetic stainless steel.
(4) Weld defects: The weld defects are serious, and manual mechanical grinding methods are used to make up for it. The resulting grinding marks cause uneven surface and affect the appearance.
(5) Surface inconsistency: Only the passivation of the welds is carried out, which also causes surface unevenness and affects the appearance.
(6) Hard to remove scratches: The entire pickling passivation cannot remove various scratches produced during processing, and it is also not possible to remove carbon steel, spatter, etc. adhered to the surface of stainless steel due to scratches or welding spatter. Impurities cause rusting due to chemical or electrochemical corrosion in the presence of corrosive media.
(7) Non-uniform polishing and passivation: After the hand-polishing process, pickling and passivation treatment is performed. For a workpiece with a large area, it is difficult to achieve a uniform and uniform treatment effect, and an ideal uniform surface cannot be obtained. And working hours, accessories costs are also high.
(8) Limited pickling capacity: Pickling passivation paste is not a panacea, It is difficult to remove plasma cutting, flame cutting, and black oxide scales.
(9) scratches caused by human factors more serious: In the process of lifting, transportation and structural processing, scratches caused by human factors such as bumps, dragging, and hammering are serious, making the surface treatment more difficult, and it is also the main cause of corrosion after processing.
(10) Equipment factors: In the process of bending profiles and plates, scratches and creases are also the main cause of corrosion after processing.
