求翻译成英文！要专业一点的

Question

请帮忙翻译下下面一句：在熔模铸造中，搪壳是第二个大流程，首先是要配制水玻璃粘结剂、硬化剂，具体流程为先涂料，再泡硬化剂，撒砂，最后干燥即可。
最起码，搪壳、水玻璃粘结剂、硬化剂、撒砂要非常准确，谢谢大神了！

Answer 1

In investment casting, the shell lining is the second important process. First, you should confect sodium silicate binder and hardening agent, the specific process was coating first, then foam hardening agent and stucco, finally, dry it.