The first automobile factory construction and its casting technology level. The first automobile factory started construction in 1953, and the first furnace hot metal was cast on March 26, 1956, declaring that China’s first large-scale production workshop for automobile castings was completed and put into production, setting a good example for the comprehensive development of China’s automobile industry’s casting production. . The foundry's material preparation, sand processing, molding and core formation, metal melting and casting, sand casting, cooling and cleaning of the castings are all through the mold conveyor, suspension chain, scale conveyor, and belt conveyor. And bucket elevators and other transportation equipment are combined into a whole. The balance wheel sand mixer, crawler type semi-automatic shot blasting drum, continuous hanging chain shot blasting chamber, cupola furnace and electric furnace double smelting, lift type electric annealing furnace and other process equipment all have the overseas 40s and 50s. Early technology level.
A large number of mechanized transport equipment will connect all processes into a complete production line. At the time, the model was a pneumatically-actuated or shock-pressure molding machine that was commonly used in the world, and six mechanized modeling flow production lines were formed by continuous or intermittent trolley-type casting conveyors. They were used for the molding of grey cast iron parts and malleable cast iron parts, respectively. The sand is sent by the belt conveyor from the sand processing department and stored in the sand bucket above the molding machine. The core of the production line is manually lowered. For the complex core groups used in the cylinder block and cylinder head, etc., they are pre-assembled, and then the cores are removed by air lifting jigs and manually boxed. The core is made of oil sand, pulp sand, and fat sand core. The core sand is made by the è¾— wheel type sand mixer; the small oil sand core is made by hand, and the large sand core is produced by the core making machine; the sand core is dried by the chain plate vertical continuous gas drying furnace.
Pigment must have a high tinting strength relative to the materials it colors. It must be stable in solid form at ambient temperatures.
Pigments are used for coloring paint, ink, plastic, construction, fabric, cosmetics, food, and other materials. Most pigments used in manufacturing are dry colorants, usually ground into a fine powder. For use in paint, this powder is added to a binder (or vehicle), a relatively neutral or colorless material that suspends the pigment and gives the paint its adhesion. A colorant can act as either a pigment or a dye depending on the vehicle involved. In some cases, a pigment can be manufactured from a dye by precipitating a soluble dye with a metallic salt.
Pigment Powder,Color Pigment,Powder Pigment,Pigment Powder Color
Yucheng Jinhe Industrial Co.,Ltd , https://www.hncarbonblack.com