2014年8月4日星期一

The performance of stainless steel sheets

Uniform corrosion refers to the metal surface contact corrosion medium total corrosion phenomena. According to different demands of different indicators on corrosion, can generally be stainless steel sheet  into two categories: Stainless steel sheets refers to the corrosion in atmospheric and weak corrosive medium steel. The corrosion rate less than 0.01mm/ year, considered to be "completely corrosion; corrosion rate less than 0.1mm/ year", that is "resistance". Corrosion resistant steel tube which can corrosion in various strong corrosive medium steel. Point corrosion refers to the metal material surface most no corrosion or slight corrosion and local corrosion occurred in highly dispersed, common corrosion spot size of less than stainless steel sheet coil , depth is often greater than the surface of the aperture, the light has a shallow pit, serious and even the formation of perforation. Crevice corrosion is a macro etch pits mottled or ulcer formation occurred in the metal component in the gap, which is a kind of local corrosion. Stainless steel sheets intergranular corrosion is a selective corrosion, with the general difference is that selective corrosion, localized corrosion is a microscopic scale, and the macro is not necessarily local.

2014年7月28日星期一

Classification of stainless steel sheet

1, the stainless steel sheet mirror panel Stainless steel sheet is also called the mirror plate, polishing liquid by polishing equipment polishing on stainless steel surface, the surface light like a mirror clear, then electroplating coloring. 2, the 430 stainless steel sheets  drawing board Pull plate, also called the hairline, because hair like slender and straight lines. The surface is Matt, look carefully with a little texture, but can not come out, than the general bright surface stainless steel wear, look more attractive to some. Plate has a variety of lines, a hairline, snow sand grain, and grain (fill), cross lines, cross lines, all the lines through the oil thrown hairline machine made according to the requirements of processing, and then electroplating coloring. 3, stainless steel sheet sand plate 3, stainless steel sheet sand plate Sand plate with zirconium beads by magnetic stainless steel sheets  equipment for processing in the stainless steel surface, make the surface appear slight bead granular sand surface, forming a unique decorative effect. Then electroplate .4, stainless steel sheet combination technology board According to the technological requirements, the hair lines, coating, polishing, sandblasting, etching process in the same piece of plate combination process. Then electroplate. 5, stainless steel sheet and plate Both and pattern plate, or drawing board are frosted plate one, only the surface state board this in not the same, so that is not the same.

2014年7月23日星期三

Several state of 430 stainless steel of magnetic

430 stainless steel magnetic has the following kinds of state, state is not the same, dirt and corrosion resistance are not the same. NO.1, 2D, 2B, N0.4, HL, BA, Mirror, and various other surface treatment.
Surface processing  430 stainless steel magnetic  feature processing technology
2D is a shiny silver white hot shot peening + annealing pickling + cold + annealing and pickling 2B is silver white and better than 2D surface gloss and flatness of hot rolling + annealing pickling + cold + shot peening annealing and pickling + temper rolling
No.3 has a 430 stainless steel plate  gloss, coarse grain of 2D or 2B with 100~120 (JIS R6002) abrasive polishing and temper rolling
No.4 has a good gloss, fine lines on the 2D or 2B with 150~180 (JIS R6002) abrasive polishing and temper rolling
430 stainless steel magneticHL was abrasive material and hair gray stripes on 2D or 2B with the proper size of polishing the surface is continuous grinding grain

2014年7月14日星期一

Ti stainless steel plate wherein a stabilizing element exists

stainless steel sheet in which 304 stainless steel coil as a stabilizing element exists, but it is also heat resistant steel, 304 stainless steel at high aspect ratio is much better .304 plate stainless steel plate at different concentrations and different temperatures of magnetic stainless steel sheets and inorganic acids, especially is a good abrasion properties in oxidizing medium, acid resistant container for the manufacture of equipment and wear lining pipelines.

2014年7月11日星期五

Corrosion of the stainless steel plate 430

All metals and oxygen in the reaction atmosphere, an oxide film is formed on the surface. Unfortunately, the iron oxide formed on carbon steel is continued oxidation, rust expanded, forming holes. You can use paint or oxidation-resistant metals (eg, zinc, nickel and chromium) plating to ensure the steel surface, but, as people know, this protection is only a film. If the protective layer is damaged, the following steel began to rust. 430 stainless steel sheets corrosion resistance depends on chromium, but because chromium is an integral stainless steel sheets of steel, so the protection methods vary. When you add the amount of chromium reached 10.5%, atmospheric corrosion resistant steel increased significantly, but higher chromium content, although still improve corrosion resistance, but not obvious. The reason is that when the steel with a chromium alloying treatment, the type of change has become similar to the surface oxide formed on the surface of magnetism stainless steel chromium oxide of the metal. Chromium-rich oxide protects the surface of this tightly adherent to prevent further oxidation. This oxide layer is very thin, it can be seen through the surface of the natural sheen of steel, so stainless steel has a unique surface. Moreover, if the damaged surface, and atmospheric reactions exposed steel surface will self-repair, re-formation of this "passive film", continue to play a protective role. Therefore, all of the stainless steel have a common characteristic, i.e., the chromium content of more than 10.5%.

2014年7月10日星期四

Features 430 stainless steel plate

430 stainless steel sheets containing sulfur and selenium cutting stainless steel, the main requirements for cutting and stainless steel sheet metal tables Guanghao occasions. 430 stainless steel to improve machinability and high temperature bonding properties. Suitable for automatic lathes. Bolts and nuts. 
430 austenitic stainless steel is acid resistant stainless steel cutting, in order to improve the performance of the steel in the steel can be added to more than stainless steel coils manufacturers molybdenum, can be resistant to erosion, product good cutting resistance and burn. after the corrosion resistance and mechanical properties of stainless steel annealing .303 to stress, tensile strength 515MPa, yield 205MPa, elongation of 40%.

430 stainless steel is the full shape and size of a standard metal manufacturing

430 stainless steel sheets is the full shape and size of a standard metal manufacturing, and there are many special shapes. The most commonly used product is made ​​of sheet and strip, and plate production with special products, for example, the production of hot-rolled structural steel and structural steel extrusion. And there are stainless steel 430ba  oval, square, rectangular and hexagonal welded or seamless steel tubes and other forms of products, including profiles, rods, wire and castings. As discussed later, in order to meet the aesthetic requirements of architects, has developed a wide variety of commercial surface processing. For example, the surface can be coil stainless steel reflective or matte; may be glossy, polished or embossed; may be colored, the color of the plating or etching a pattern on the surface of stainless steel to meet the designer appearance various requirements. Surface state is easy to maintain. Just the occasional rinse can remove dust. Because of good corrosion resistance, graffiti can be easily removed or contaminated surfaces other similar surface contamination.