If there is no shrinkage of the rubber material in the design data, or the shrinkage of the rubber material given in the data is generally a numerical range rather than a fixed value, in order to obtain a high-precision bellows product, the mold cavity can be designed according to the part size Size, accurately measure the size of the product after the trial mold, and then obtain the shrinkage of the rubber material, and then redesign the mold cavity size according to formula (1). The operability and reasonable mold structure can produce qualified products stably. Different types of rubber shrinkage rate is different, even for the same type of rubber, the shrinkage rate is also affected by the hardness of the rubber compound, vulcanization temperature, time, pressure and product size during processing.
The material of the bellows vulcanization mold is generally 45pallet mould manufacturers https://www.haohaomould.com/product/pallet-mould/ steel or 40Cr steel. For the inner and middle molds 1, 2 and core molds, wire cutting should be performed after nitriding.7MPa. The cyano group (CN) on the side chain is not affected during the hydrogenation process, so the polymer after hydrogenation also has good oil and fuel resistance. The middle mold of the bellows mold adopts a Huff structure, and the core adopts a combination structure of inserts.
Design a vulcanization mold for rubber bellows used in mechanical seals in the metallurgical industry. Therefore, before designing the mold, the following two steps must be carried out: (1) according to the medium sealed at the sunken roller journal, select an economical and suitable rubber material; (2) select an appropriate shrinkage rate based on the type of rubber # material and product size value. Each matching part of the mold should adopt a matching method to facilitate the assembly and disassembly of the mold. It is characterized by good heat resistance ,chemical resistance and weather resistance, and is resistant to almost all mineral-based and synthetic Base hydraulic oil.
The bellows is made of rubber, and the appropriate value of the rubber shrinkage rate directly determines whether the size of the final product meets the design requirements. (2) Fluorine rubber: The main bond of carbon atoms of fluorine rubber is replaced by fluorine atoms, and the molecular structure is very stable
The material of the bellows vulcanization mold is generally 45pallet mould manufacturers https://www.haohaomould.com/product/pallet-mould/ steel or 40Cr steel. For the inner and middle molds 1, 2 and core molds, wire cutting should be performed after nitriding.7MPa. The cyano group (CN) on the side chain is not affected during the hydrogenation process, so the polymer after hydrogenation also has good oil and fuel resistance. The middle mold of the bellows mold adopts a Huff structure, and the core adopts a combination structure of inserts.
Design a vulcanization mold for rubber bellows used in mechanical seals in the metallurgical industry. Therefore, before designing the mold, the following two steps must be carried out: (1) according to the medium sealed at the sunken roller journal, select an economical and suitable rubber material; (2) select an appropriate shrinkage rate based on the type of rubber # material and product size value. Each matching part of the mold should adopt a matching method to facilitate the assembly and disassembly of the mold. It is characterized by good heat resistance ,chemical resistance and weather resistance, and is resistant to almost all mineral-based and synthetic Base hydraulic oil.
The bellows is made of rubber, and the appropriate value of the rubber shrinkage rate directly determines whether the size of the final product meets the design requirements. (2) Fluorine rubber: The main bond of carbon atoms of fluorine rubber is replaced by fluorine atoms, and the molecular structure is very stable
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