Rubber processing process is mainly to solve the plasticity and elasticity of the contradiction between the process, through a variety of means of processing, making the elastic rubber into plasticity of the plastic rubber, adding a variety of agents made of semi-finished products, and then through the vulcanization of semi-finished products with plasticity and into high elasticity, good physical and mechanical properties of the rubber products.
Rubber production method:
Extraction of rubber tree, rubber grass and other plants latex, processing made of elasticity, insulation, impermeable to water and air materials. Highly elastic polymer compounds. Divided into natural rubber and synthetic rubber two kinds. Natural rubber is extracted from rubber trees, rubber grass and other plants after processing made of gum; synthetic rubber by a variety of monomers by the polymerization reaction and get. Rubber products are widely used in all aspects of industry or life.
Process:
The process includes the basic processes of plasticizing, mixing, calendering or extruding, molding and vulcanizing, each of which has different requirements for the products and is accompanied by a number of auxiliary operations. In order to be able to add a variety of required agents into the rubber, the raw rubber first need to go through the plasticizing to improve its plasticity; and then through the mixing of carbon black and a variety of rubber additives and rubber into a uniform mixture of rubber; rubber through the press out of a certain shape made of blanks; and then make it with the calendering of hanging or coated with rubber textile materials (or with metal materials) together with the combination of molding for the semi-finished products; and finally after the vulcanization of the semi-finished products will be made into highly elastic final products with plasticity. Finally, after vulcanization, the plastic semi-finished products are made into highly elastic final products. Higher precision requirements for products, oil seals, O-rings, seals and other rubber products, but also need to be trimmed, deburring processing, can choose the way of manual trimming, mechanical trimming and freezing trimming.
Manual trimming: labor-intensive, low efficiency, low pass rate.
Mechanical trimming: mainly punching and cutting, grinding wheel and round knife trimming, applicable to the precision requirements of the specific products are not high.
Frozen trimming: special frozen trimming machine equipment, the principle is to use liquid nitrogen (LN2) to make the finished product of the burrs in the low temperature becomes brittle, the use of specific frozen particles (projectile) to hit the burrs, in order to quickly remove the burrs. The high efficiency, low cost and wide range of applicable products of frozen trimming has become the mainstream process standard.
Supplementary: processing workshop needs 50-100 square meters, the warehouse needs 100 square meters, the site (storage tires) according to the situation can be large or small. Personnel required for processing: 3-5, both men and women. Water (cooling circulating water, the amount is not large, need to build a pool of 3 cubic meters) Electricity (three-phase electricity 380V total power 30KW) working capital, according to the actual situation can be more or less, generally RMB 10,000 yuan. Take 30 mesh powder as an example (calculated in tons) The total cost per ton is 1300 RMB. The current market price of 30 mesh purchase price of RMB 2,000 yuan / ton or so, the net profit per ton of RMB 2,000 yuan - 1,300 yuan = 700 yuan; if the monthly production of 40 tons of calculations, then the monthly net income of 700 yuan × 40 tons = 28,000 yuan, 10 months per year, the annual income of 28,000 yuan × 10 = 280,000 yuan. At present, the market price of 40 mesh 2400 yuan / ton, 60 mesh market price of 2800 yuan / ton; if the processing of 40 mesh, 60 mesh or finer glue powder profit space will be greater.