正文 52、求助网络大神(第3页/共4页)
杨凡问道。
“十个火箭，全套解决方案！”吴胖子坐地起价。
“刷礼物钱都被平台赚了，我给你发200红包如何。”
“成交！”
吴胖子给出了解决办法。
首先放弃泥模铸造，改用铁模铸造。铁模没有水汽，不会有气泡。
“泥模是一次性的，可以打碎。取出内部的枪管。用铁做模具，那浇筑后，铁水冷却后不就和模具粘在一起了吗，模具拿不下来啊”
“笨，不要直接接触，先在铁模具内部刷上一层石墨粉，不就沾不上了吗，冷却了，直接把铁模具拆下来就行，铁模具都是两片的扣在一起的，大型的还有组装的。最后把铸造品上沾着的石墨粉用砂纸打掉不就完了。”
杨凡醍醐灌顶，原来还可以这么做。
“另外，你想啊，泥模铸造，还得先做一套木模，一根枪管做一套，成本多大啊。”
“铁模可以反复用。省多少钱。时间上更划算，泥模要阴干，这个得十天半个月吧，铁模反复用，一块铁模，一天可以铸造上百根枪管。”
杨凡傻眼了，这就是内行和外行的区别。
气泡问题解决了。
“那冷却怎么做，还有裂缝没有解决。”
“办法有两个，第一水冷却，这个需要有一定经验，水是限制最高温度一百度的，冷却速度太快，要有经经验的老师傅。否则反而会加剧开裂。反复淬火还可以提高硬度和强度，加强枪管的性能。”
“第二个办法是用油淬火，这个成本高，但是油沸点高，冷却速度慢，效果更好些。”
杨凡懂了。
“老铁，铁模具我可以给你做，你只要把尺寸给我，我用机床给你加工出来邮寄给你。”
“多少钱一个。”
“不贵，二百一套包邮。赠送使用和淬火工艺文件”
“来五套。”
杨凡也不磨叽，直接转账600给吴胖子。到货付另一半。
地址就让他邮寄到传送工厂，倒是让猴子拿到仓库放好，自己偷偷传送过来就行，小物件用不了多少能量。
杨凡敏锐的感觉到，这个技术非同小可，既然能用在铸造枪管上，就能用在火炮上。
而这个技术如果给了宋应星，就等于给了徐光启。给了徐光启就等于给了孙元化。
&
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