锻模在使用过程中,反复急剧升温和冷却,并受到很大的冲击力,致使模腔塌陷或产生龟裂,在燕尾产生较深长的裂纹。一般锻模出现裂纹,常采用的修复方法是锻模退火—机械加工,清除裂纹—修补—淬火—修型腔。本文介绍一种用碳弧气刨的方法,直接修复锻模裂纹的工艺。一、燕尾的裂纹部位图1所示为燕尾的各种裂纹部位,其中最常见的是图1(b)所示的裂纹,这种裂纹常出现在燕尾一侧,而且是沿锻模长度L裂通,比较深,一般深度在10～30mm,有时可达40～50mm。其次是图1(c)所 During the use of forging dies, repeated rapid heating and cooling, and subjected to great impact, resulting in collapse of the mold cavity or produce cracks in the dove tail to produce more long cracks. General forging cracks, the repair method is often used forging die annealing - machining, removal of cracks - repair - quenching - repair cavity. This article describes a carbon arc gouging method that directly repairs the die forging process. First, the crack tip dovetail Figure 1 shows the various parts of the dovetail crack, the most common is the crack shown in Figure 1 (b), this crack often appears in the dovetail side, and along the length of the die L Cracked, relatively deep, the general depth of 10 ~ 30mm, sometimes up to 40 ~ 50mm. Followed by Figure 1 (c) Institute