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LoginWhich of the following compounds can be used as an inhibitor in moulding materials for avoiding chemical reaction with magnesium alloys?
(a) Sodium silicate
(b) Water
(c) Hydrogen silicate
(d) Potassium borofluoride
I had been asked this question in a job interview.
Question is taken from Magnesium Alloys in section Foundry Introduction & Materials of Casting-Forming-Welding II
Casting-Forming-Welding Ii Foundry Introduction & Materials in Casting-Forming-Welding Ii . 3 years ago
+10 pts
Correct answer is (d) Potassium borofluoride
To explain I would SAY: Moulding materials are effectively inhibited by adding 1 to 2 percent of potassium borofluoride. And controlling of INHIBITOR content in moulding materials is very important because they can affect setting times. Sometimes elimination of SILICA content from moulding materials also takes place to avoid chemical reactions.
Posted on 02 Dec 2021, this text provides information on Casting-Forming-Welding Ii related to Foundry Introduction & Materials in Casting-Forming-Welding Ii. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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