JNS Instruments Engineer Interview Questions and Answers

Moulding defect refers to any imperfection or flaw in the manufacturing process of moulded products.

• Moulding defects can occur due to various reasons such as improper material flow, inadequate cooling, or incorrect mould design.

• Examples of moulding defects include flash, sink marks, warpage, voids, and short shots.

• Flash occurs when excess material escapes from the mould, resulting in a thin layer of material around the...read more

Silver marks can be controlled by using protective coatings and proper cleaning techniques.

• Apply a protective coating, such as lacquer or wax, to prevent silver from tarnishing

• Store silver items in airtight containers or with anti-tarnish strips to minimize exposure to air

• Avoid contact with substances that can cause silver to tarnish, such as sulfur-containing materials

• Clean silver regularly using gentle methods, such ...read more