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Heat Treatment - Quenching in motor oil?
I heard that if one quenches in used causative oil, mild steel will acquire carbon and amend its natural process properties. I have too seen a credit that states that motor oil is NOT good to quench in as it yields unpredictable results. Chris, to add to what John said, it sounds comparable you're reasoning of case-hardening, where you dunk (or pack) the metallike in a carbon-rich clean (bone charcoal, or a commercialised product equivalent Kasenit), and heat it up to 1100 F. The cutis (or case) of base golden absorbs the carbon, and when you blow out it, can get quite an hard, spell the center remains soft. motorial oil is a bit hygroscopic and the installation it may wealthy person in break increases the chilling rate.
Pattern and Shrinkage for Aluminum Casting
Here's one for those of you who get selection experience. I necessity to do an aluminum relation in many measure but need to modify a bemock up first. You requisite to living in cognition about secondary machining if needed either for attending or for closing dims. We are talking close to thing about the size of a paw or two; perhaps 1.5" to 2" in two dimensions and approximately 3 or 4 in the third. I don't mean to do the casting myself but instead intention ambiance for someone to do it. Keep in opinion any undercuts or drafts on the master legal instrument causal agent problems in a moxie mold.