Rubber elastomer for expanding head of tube expander

Abstract

A rubber elastomer used for the expanding head of tube expander is prepared from fluorine rubber as base material, teflon powder, silicone, MoS2 powder, calcium hydroxide powder, magnesium oxide powder, zinc oxide powder, basic lead phosphite, and carbon black. Its advantages are uniform expansion force, less adrasion and long service life.

Description

technical field [0001] The invention relates to a rubber elastic body used for an expanding head of a tube expander. Background technique [0002] The tube expander is a device that can deform the tube and further fix and connect the tube to other structures, especially the connection between the tube and the tube sheet in the manufacture of heat exchangers, boilers and air conditioners. [0003] Rubber expansion joints are a frequently used method for connecting tubes to tube sheets in the manufacture of heat exchangers and the like. Through the expansion joint, the relative position between the tube and the tube sheet can be fixed to prevent pull-off; the material inside the tube can be separated from the material outside the tube to achieve sealing and prevent mixing. The rubber expansion joint has the advantages of fast expansion speed, no pollution to the inner wall of the pipe, uniform expansion pressure, and low single-hole operation cost. However, the rubber elasti...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantage of non-uniform expansion tube pressure along the axial direction caused by friction in the previous rubber expansion tubes, and disclose a rubber elastic body suitable for rubber expansion tubes with a small friction coefficient. The rubber elastic body is also Suitable for sealing devices designed and manufactured according to the expander principle