sphere-joint of steering-shaft

A process is provided for preparing a silicone elastomer composition for cosmetic products which includes the steps of feeding the silicone elastomer composition comprising a silicone rubber in a carrier fluid into a reactor, mixing the composition in the reactor, delivering the composition from the reactor into a high pressure pump, pumping the fluid into a device for reducing particles of rubber into smaller sizes and recirculating the resultant size reduced particles back to the reactor. The device for reducing particle size is preferably a high pressure fed homogenizer, most advantageously a sonolator. 본 발명은 조향축 하단에 스피어 조인트를 구성하기 위한 요크 샤프트에 관한 것으로서, 스피어 블록에 결합되는 요크와 샤프트가 단조작업에 의해 일체로 성형되는 특징이 있으며, 이러한 본 발명에 따르면 요크와 샤프트를 각각 제작하여 용접 조립해야하는 불편함을 없앨 수 있게 됨으로써 제작성을 향상시킬 수 있게 된다.