火攻矫正工艺-中英文.doc

火工矫正程序 Procedure for Distortion Correction by Flame 客户项目号 Client No. 所有项目 All Projects 编 制 Edit 审 查 Audit 批 准 Authorization 公司订单 Order No. 通用火工矫正程序 General Procedure for Distortion Correction by Flame 文件编号 Document No. S02 THM 2012 001 A0 版本 Version A0 页码 Pages 1/25 2012-11-27 / / 使用部门 Department 生产部办公室/加工科/组立一科/组立二科/组立三科/ Fabrication Office/Processing Section/1st Assembly Section/2nd Assembly Section/3rd Assembly Section/QA Dept 版本号Version 修订内容 Modifications 修订 Edit 审核 Audit 批准 Authorization 日期 Date 1 火工矫正的目的 Purposes 火工校正主要是用来消除钢板扎制、热切割、焊接产生的残余应力和变形。在焊接钢结构制造中最主要是用来对焊接变形的校正。 Distortion correction by flame is mainly used for eliminating the resident strength and distortion from plates rolling, heat cutting and welding. In welding steel structures this process mainly applies for the correction of welding distortion. 2 火工校正的原理 Principle 火焰矫正是利用金属热胀冷缩的物理特性，采用火焰局部加热金属，热膨胀部分受周围冷金属的制约，不能自由变形，而产生压塑性变形，冷却后压塑性变形残留下来，引起局部收缩，即在被加热处产生积聚力，使金属构件变形获得矫正。 Flame correction is based on the characteristic of steel expanding with heat and contracting with cold. After partial heating of the steel, the pressing distortion coming from pressure of heated parts will contract when cooling down, creating strength in pre-heated place, so as to correct the distorted metals. 3 焊接变形的种类 Distortion Groups 3.1 纵向收缩变形 Longitudinal Contract Distortion 构件焊后在焊缝方向产生收缩。焊接结构焊后出现的收缩变形是难以修复的，必须在构件下料时加放余量。The metal contracts in the direction of welding seam and this contracting distortion is hard to correct. During material preparation, this must be seriously considered and leave enough allowance. 3.2 横向收缩变形 Horizontal Contract Distortion 构件焊后在焊缝横向产生收缩。焊接结构焊后出现的收缩变形是难以修复的，必须在构件下料时加放余量。The metal contracts in the direction of horizontal welding seam and this contracting distortion is hard to correct. During material preparation, this must be seriously considered and leave enough allowance. 3.3 角变形 Angle Distortion 构件焊后，构件的平面围绕焊缝发生的角位移。主要是由于焊缝截面形状不对称，或施焊层次不合