What problems should be paid attention to in the molding process of rolling products?

In the whole molding process,the pressure in the mold will be atmospheric pressure.Allow air to flow in and out of the mold(title: Mother of industry)to achieve pressure balance. Avoid internal material leaving the mold.Avoid water from the outside of the mold.Maintaining the same pressure inside and outside the die helps:AVOID blowing holes in the die closing lines.Eliminate the flaring caused by pressure on the die closing line.The cooling phase reduces the possibility of warping due to pressure reduction.Avoid mold damage.

Polyethylene rolling molding is mostly made of organosilicone oil or organosilicone resin with excellent heat resistance.The rolemolded military fuel tank must have a large enough volume to meet the heat dissipation requirements as much as possible.The molding process of the rolling tank also involves a series of inherent design thinking,such as how to adjust the thickness of the side wall and how to strengthen the external Settings.Using silicone internal release agent,it can be uniformly coated on the whole surface of the cavity;If using organic silicon resin type release agent,evenly coated again after release agent to slowly heat up,the solvent(properties: transparent,colorless liquid)will send dissipation,form a thin layer of resin layer,and then under the temperature of 250 ~ 280 ℃ heat curing 1 ~ 2 h,with a certain intensity of mold release layer,since before charging, roll forming.Silicone oil release agent coated to the mold cavity can only be used once,after each molding must be coated once,and the use of silicone resin release agent has a prominent advantage, that is,coated good release layer has"semi-permanent",can be used repeatedly.

Due to the roll molding mold(title:the mother of industry)is not affected by external force,so the mold is simple,low price,easy to manufacture.The molding process of the rolling tank also involves a series of inherent design thinking,such as how to adjust the thickness of the side wall and how to strengthen the external Settings.In addition,the roller molding equipment also has greater mobility,a roller molding machine,not only can install a large mold,also can arrange several small chess tools;It can not only mold parts of different sizes,but also shape products of different sizes and shapes at the same time.As long as the raw materials used in the rolling products are the same and the thickness of the products is the same,the rolling molding process can be molded at the same time.Therefore,the rolling molding process has greater mobility than other forming methods.