Rubber Seal Strip Factors Affecting Quality

In my opinion, there are two factors that affect the quality of rubber seal: objective factors, subjective factors.

Objective factors as the name suggests, and non-human factors. Rubber seal here, I attributed to machinery and equipment. I think the production of seal the old and new machines, rubber seal of the advanced technology or not, to a large extent affected the production and quality of rubber seal. The introduction of advanced technology, keeping up with the development of the times, so in order to seal the bar in this industry a stable leader.

Insiders know that in addition to the hardware facilities in the production process, the software technology must also be superior. In terms of the process of producing the sealing strip, it needs to be rolled before the production to make the sealing strip uniform. After the rubber sealing strip is vulcanized to produce the finished product, the size of the sealing strip needs to be grasped in the production process so as not to deform the sealing strip Wait. This requires a number of technicians to test and careful research can be achieved.

EPDM sealing strip can be divided into two categories according to the material: compact strip and foam strip, solid seal strip hardness is generally between 65 degrees -90 degrees; foaming seal strip hardness between 15 degrees and 35 degrees, the product is soft, back Good elasticity, suitable for all kinds of sealing blocks, gaskets and so on.

EPDM seal by vulcanization method can be divided into:

1) Discontinuous vulcanization method (after the extruded strip is cut to a certain length, it is put into the vulcanization tank to be vulcanized, and the semi-finished extruded rubber strip is put into the model for vulcanization);

2) continuous vulcanization (microwave continuous vulcanization, salt bath continuous vulcanization, hot air continuous vulcanization and several other methods). A. Microwave continuous vulcanized composite seal: microwave curing technology is the 1970s after the foreign energy crisis and has been widely used in production technology. The use of microwave continuous vulcanization technology can not only produce metal core, compact plastic and styrofoam coextrusion a variety of materials, and, in terms of energy saving, improve work efficiency than other continuous curing device superior. This technology is recognized by the world as the best process for producing extruded products. The characteristic of microwave heating is that the heat is directly generated in the heated object instead of being input from the outside as usual, so that the heat is not only quickly heated but also evenly distributed, which is beneficial to improving the product quality and shortening the heating time greatly. B. salt bath continuous vulcanization seal: salt bath sulfide salt bath system with nitrite, a larger environmental pollution, has been gradually eliminated. C. Hot Air Vulcanization Seals: Hot Air Vulcanization has been developed to strong wind type Vulcanization, ie the use of high temperature, high speed hot air vulcanization (Tmax: 450 ° C and Vmax: 60 m / s) Security is greatly improved