Stainless Steel (Stainless Steel) is short for acid-proof Stainless Steel, resistant to weak corrosive medium such as air, steam, water, or with a Stainless Steel grade is called Stainless Steel; And resistance to chemical corrosion medium (acid, alkali, salt and other chemical etching) of steel is called acid-resistant steel. Due to the differences in chemical composition and make them both the corrosion resistance of different, ordinary stainless steel is generally not resistant to chemical corrosion medium, and acid is commonly have stainless steel.
|Product Name:||creative home wine stopper|
|Main material:||zinc alloy + organic glass|
Production process: hot chamber die casting
Product features: beautiful appearance, three layer O ring for a variety of bottle
Hardware surface processing subdivision can be divided into: metal painting processing, electroplating, surface polishing processing, metal corrosion processing, etc.
Hardware parts surface processing:
1, paint processing: hardware factory in the production of large pieces of metal products are used when the paint processing, through the paint processing to avoid rusting hardware, such as: daily necessities, electrical enclosures, handicrafts, etc.
2, electroplating: Electroplating is the most common metal processing of a processing technology, through the modern technology of the surface plating hardware to ensure that products do not occur under long-term use of mildew, embroidery, electroplating common: screws, stamping parts, Cell pieces, car parts, small jewelry, etc.,
3, the surface polishing: surface polishing generally used in daily necessities, through the surface of the metal products, such as burr processing: For example: we produce a comb, comb is made by pressing the hardware, then the punch out of the comb corner Is very sharp, we will have to polish the sharp part of the corner will be cast into a smooth face, so that in the course of the use will not cause harm to the human body.
Turning the outer surface of the metal processing is the basic method of processing the outer surface, the equipment used is a lathe. In the general machinery factory, lathes accounted for about 40% of the total number of machine tools. Turning is the main method of roughing and semi-finishing the outer surface of various materials, but also the final finishing method of various materials which should not be ground.
Single-piece small batch production, turning the general surface in the ordinary lathe. Large-scale production, the widespread use of multi-blade semi-automatic lathes or automatic lathes. Large-scale disk parts should be processed on a vertical lathe. Large long shafts are to be machined on heavy horizontal lathes.
Chromium ferritic stainless steel: including 12% ~ 30%. Its corrosion resistance, toughness and weldability with chromium content increases with the increase of chloride stress corrosion resistance is superior to other types of stainless steel. Fall into this category of Crl7, Cr17Mo2Ti, Cr25, Cr25Mo3Ti, Cr28, etc. Ferritic stainless steel because of the high chromium content, corrosion resistance and oxidation resistance are relatively good, but the mechanical properties and process performance is poorer, more used to stress less acid structure and steel used as antioxidant. This kind of steel to withstand atmosphere, nitric acid and corrosion of the brine solution, and has good high temperature oxidation resistance, low thermal expansion coefficient, etc, used in nitric acid and food factory equipment, also can make work under high temperature parts, such as gas turbine parts, etc.
0.08% 0 cr19ni9 steel, steel grade is marked as "0". This class contains large amounts of Ni and Cr in steel, make steel in austenitic state at room temperature. This kind of steel has good plasticity and toughness, weldability and corrosion resistance and non-magnetic, corrosion resistance in oxidizing and reducing medium are good, used to make acid equipment, such as corrosion resistant containers and equipment lining, pipelines, nitric acid resistant equipment parts, etc., also can be used as the main body of watches and clocks jewelry stainless steel material. Austenitic stainless steel with solid solution treatment, the steel heating to 1050 ~ 1150 ºC, then water-cooled or air-cooled, for single-phase austenitic organization.