prebending meaning in English

预弯

It ` s suitable for the bend and deformation of the metal plates and it can roll the round and arcshapes and the cone ones within its specified ranges . it has the function of prebending the plate at both ends . the two lower rollers are the driving ones and can make the horizontal movement ; and the upper is a driven one and can make the up and down movement . the moving manner includes the mechanical and industry , boilers , shipbuilding , metal structure , machine manufacture and other trades , especially for the roll the steel trunks with smaller diameter and longer length in power transmission and trandform and other trades
该机适用于金属板材的弯曲成型,可卷制圆形,弧形和一定范围的锥形工作,并有板材端部预弯功能,本机型两个下辊为主动辊并可水平移动,上辊为从动辊上下移动,移动形式有机械式和液压式,传动轴均采用万向连轴器连接,它广泛适应于石油化工锅炉造船金属结构及机械制造行业,特别适用于送变电行业等直径较小长度较长钢管杆的卷制