The hottest Zhongshan Iron Ball wholesale market

Zhongshan Iron Ball wholesale market

Jinshun mainly produces 316L stainless steel balls, 304hct stainless steel balls, copper balls, stainless steel hollow balls, stainless steel polishing balls, stainless steel UFO balls, plastic balls, alloy balls, carbon steel balls, glass balls, aluminum balls, titanium balls, stainless steel milk bottle balls, plastic milk bottle balls, electroplating balls, 440C 420C Cr15 and other steel balls of various materials for high-precision sealing. The raw materials are from Yongxing special steel, Baosteel, Dalian special steel, Great Wall Special Steel and other domestic high-quality manufacturers. The specification of steel ball is 0.5mm-60mm, and the grade is grade G. Can customize non-standard, Zhongshan Iron Ball wholesale market_ Jinshun hardware also produces high, medium and low carbon steel, bearing steel and drilling balls, which are widely used in cosmetics, metering pumps, aerospace industry, automotive industry, spray, stainless steel bearings, handicrafts, therapeutic instruments, motorcycles, bicycles and other supporting products

the standard specifies the size of steel balls. Zhongshan Iron Ball wholesale market_ Jinshun hardware, technical requirements, marks, measurement and inspection methods, inspection rules, packaging and storage. The standard applies to steel balls for rolling bearings and commercial carbon chromium bearing steel balls. Based on the business tenet of "customer first, Zhongshan Iron Ball wholesale market _ Jinshun hardware, reputation first", Lida has produced steel balls and bearings, which have been praised by many enterprises and manufacturers at home and abroad, and established a good business relationship with customers. All employees of the company sincerely welcome domestic and foreign merchants to negotiate business, invest and cooperate, and create brilliance hand in hand

316 stainless steel have been greatly improved due to the addition of Mo element. The high temperature resistance can reach degrees, which can be used under harsh conditions

stainless steel 316 is mainly used for pulp and paper equipment, heat exchangers, dyeing equipment, film washing equipment, pipelines, and materials for the exterior of buildings in coastal areas. In 2013, it was also used in the field of solenoid valves, mainly for shells, clamps, spheres, valve bodies, valve seats, nuts, valve stems, etc

stainless steel is generally divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, duplex stainless steel and deposition hardening stainless steel, or into chromium stainless steel and nickel stainless steel

316 stainless steel has excellent welding function. All standard welding methods can be used for welding. 316cb, 316L or 309cb stainless steel filler rods or electrodes can be selected for welding according to their use. In order to obtain the best corrosion resistance function, the welding section of 316 stainless steel needs to be annealed after welding. If 316L stainless steel is used, post weld annealing treatment is not required

⑴ Brinell hardness (HB) press a hardened steel ball of a certain size (usually 10mm in diameter) into the surface of the data with a certain load (usually 3000kg) and keep it for a period of time. After unloading, the ratio between the load and its indentation area is Brinell hardness value (HB), and the unit is kilogram force/mm2 (n/mm2)

⑵ Rockwell hardness (HR) when hb>450 or the sample is too small, the Brinell hardness test cannot be used and the Rockwell hardness measurement is used instead. It uses a diamond cone with a vertex angle of 120 ° or a steel ball with a diameter of 1.59 and 3.18mm to press into the surface of the measured data under a certain load, and the hardness of the data is calculated from the depth of the indentation. According to the different hardness of the experimental data, it can be expressed in three different scales: HRA: it is the hardness obtained by selecting 60kg load and diamond cone press, which is used for cutting materials with the strong support of the state (such as cemented carbide) with extremely high hardness. HRB: it refers to the hardness obtained by selecting 100kg load and 1.58mm diameter hardened steel ball, which is used for data with low hardness (such as annealed steel, cast iron, etc.). HRC: it is the hardness obtained by using 150kg load and diamond cone press, which is used for materials with high hardness (such as quenched steel)

⑶ Vickers hardness (HV) use a load within 120kg and a diamond square cone indenter with a vertex angle of 136 ° to press into the surface of the data, and use the outside of the data indentation pit. When the dynamometer part is installed unevenly, the surface product is divided by the load value, which is the Vickers hardness value (HV)

304 stainless steel belongs to soft state; Generally speaking, soft stainless steel refers to completely annealed stainless steel. Low hardness and tensile strength

304 stainless steel chemical composition

standard C Si Mn p s Cr Ni (nickel) mo

sus431 ≤ 0.08 ≤ 1.00 ≤ 2.00 ≤ 0.05 ≤ 0.0318 00 8.25-10.50 -

304 is 1Cr18Ni9

the mechanism of stainless steel rust prevention is that alloy elements form a fine oxide film to isolate oxygen contact and prevent further oxidation. So stainless steel is not "stainless"

both steels are martensitic stainless steel, which can effectively replace the imported ones. The carbon content of 440C (i.e. 9c180 ° mode R18) is 0 0%, containing about 18% CR. The hardness and toughness of the material are related to the heat treatment process you choose. At present, 440C is mostly used as high-grade cutting tools. The heat treatment is: quenching about 1020 degrees, tempering about 250 degrees, and the hardness is about 55HRC

Dongguan Jinshun hardware and Plastic Co., Ltd. is located in the first industrial zone of Wufang, Gaopo Town, Dongguan, and produces steel balls, steel balls, stainless steel balls, stainless steel balls, iron balls, iron balls, and copper ball rivets; Bearings; Screws; Hardware special-shaped parts, etc. It is widely used in baby carriages, guitars, treadmills, mechanical equipment, suitcases and bags. Jinshun has strong technical force and production lineup. Jinshun has production equipment and perfect testing instruments

Jinshun mainly produces 316L stainless steel balls, 304hct stainless steel balls, copper balls, stainless steel hollow balls, stainless steel polishing balls, stainless steel UFO balls, plastic balls, alloy balls, carbon steel balls, glass balls, aluminum balls, titanium balls, stainless steel bottle balls, plastic bottle balls, electroplating balls, 440C 420C Cr15 and other steel balls of various materials for high-precision sealing. The raw materials are from Yongxing special steel, Baosteel, Dalian special steel, Great Wall Special Steel and other domestic high-quality manufacturers