How can the pinholes be reduced?(a) Oxidizing(b) Deoxidizing(c) Adding ozone(d) Adding calcium carbonateI had been asked this question in an online interview.The query is from Mold-Metal Reaction in chapter Mold and Mold Making of Casting-Forming-Welding I

How can the pinholes be reduced?(a) Oxidizing(b) Deoxidizing(c) Adding

1.	How can the pinholes be reduced?(a) Oxidizing(b) Deoxidizing(c) Adding ozone(d) Adding calcium carbonateI had been asked this question in an online interview.The query is from Mold-Metal Reaction in chapter Mold and Mold Making of Casting-Forming-Welding I
Answer» Right answer is (b) Deoxidizing The best I can EXPLAIN: When PINHOLES are being PRODUCED more than necessary, the metal-mold reaction has to be deoxidized, which can cause the pinholes to reduce.

Discussion

No Comment Found

Related InterviewSolutions

Centrifugal casting is a method of casting which works on the principle of centrifugal force.(a) True(b) FalseI have been asked this question in an interview for job.I would like to ask this question from Forces Acting on Cores and Mold topic in division Mold and Mold Making of Casting-Forming-Welding I
In mould making process, clamping is basically done to prevent any loss of material from the moulding box.(a) True(b) FalseThe question was posed to me during an interview.I want to ask this question from Steps Involved In Making a Mold in section Mold and Mold Making of Casting-Forming-Welding I
Silica reacts with what to give out fayalite?(a) Iron(b) Iron Sulphate(c) Iron Oxide(d) Iron CarbideI have been asked this question in an internship interview.I'd like to ask this question from Mold-Metal Reaction in division Mold and Mold Making of Casting-Forming-Welding I
Which of the following method can be used for both solid patterns and split patterns?(a) Open sand method molding(b) Bedded-in method molding(c) Turn-over method molding(d) Dry sand moldingI got this question during an online interview.My doubt stems from Methods of Green Sand Molding topic in chapter Mold and Mold Making of Casting-Forming-Welding I
What is the chemical formula of silica?(a) SiO(b) SiO2(c) SiO3(d) SiO4The question was asked by my school teacher while I was bunking the class.Query is from Mold-Metal Reaction topic in division Mold and Mold Making of Casting-Forming-Welding I
Friability and crumbling are the properties which help in removing the core material from the solidified casting.(a) True(b) FalseThe question was posed to me in final exam.Enquiry is from Forces Acting on Cores and Mold topic in section Mold and Mold Making of Casting-Forming-Welding I
During the pouring process, filling time of molten metal should be short to avoid early solidification of the casting.(a) True(b) FalseI got this question in unit test.Question is taken from Steps Involved In Making a Mold topic in division Mold and Mold Making of Casting-Forming-Welding I
The following figure represents which hand molding equipment?(a) Gate cutter(b) Draw spike(c) Swab(d) Hand riddleI have been asked this question during an interview.Question is from Hand Molding Equipment topic in portion Mold and Mold Making of Casting-Forming-Welding I
Coarse sand grains of the core material can improve the refractoriness of the core.(a) True(b) FalseI got this question in an interview for internship.This interesting question is from Forces Acting on Cores and Mold in chapter Mold and Mold Making of Casting-Forming-Welding I
Refractoriness required in the core should be lower than that required in the moulding sand.(a) True(b) FalseThis question was addressed to me during an online interview.Enquiry is from Forces Acting on Cores and Mold in chapter Mold and Mold Making of Casting-Forming-Welding I

How can the pinholes be reduced?(a) Oxidizing(b) Deoxidizing(c) Adding ozone(d) Adding calcium carbonateI had been asked this question in an online interview.The query is from Mold-Metal Reaction in chapter Mold and Mold Making of Casting-Forming-Welding I

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment