The piercing principle of 2-roll cross-rolling piercer and its application range are discussed.
论述了二辊斜轧锥形辊穿孔机的穿孔原理及其应用范围。
2
Cold-cross-rolling is a new cold processing technique espevially applicable for technical improvement of middle-small size enterprises.
冷斜轧是一种适应中小型无缝钢管企业改进工艺的新型钢管冷加工工艺。
3
The conclusion provides some of theoretical basis for the further research of the three-cross-rolling technology and practical operation. It has some theoretical significance and practical value.