Havells Design Engineer Interview Questions, Process, and Tips

Q1. Plastic shrinkage?
Add your answer
Q2. How many types of plastic material category?
Ans. 
There are seven main categories of plastic materials.
• Thermoplastics

• Thermosets

• Elastomers

• Composites

• Biodegradable plastics

• Engineering plastics

• High-performance plastics
Answered by AI
Add your answer
Q3. Plastic rib thickness standard?
Ans. 
Plastic rib thickness standard varies depending on the application and material used.
• Plastic rib thickness is typically between 0.5mm to 5mm.

• Thicker ribs provide more strength but may increase material usage and cost.

• Thinner ribs are more cost-effective but may be prone to warping or breaking.

• Consider the material properties and intended use when determining rib thickness.

• Consult industry standards and guidelines for s
Answered by AI
Add your answer
Q4. How many types of defects in plastic?
Ans. 
There are three main types of defects in plastic: surface defects, physical defects, and chemical defects.
• Surface defects include scratches, sink marks, and flow marks.

• Physical defects include bubbles, voids, and warping.

• Chemical defects include discoloration, degradation, and contamination.
Answered by AI
Add your answer

Q1. Diff b/w hot runner & cold runner?
Add your answer
Q2. How to prevent plastic defects?
Ans. 
Preventing plastic defects involves proper material selection, design optimization, and quality control measures.
• Selecting the right type of plastic for the application

• Optimizing the design to minimize stress concentrations

• Implementing proper molding techniques and parameters

• Conducting thorough quality control inspections

• Training staff on proper handling and storage of plastic materials
Answered by AI
Add your answer
Q3. No. of tonnage molding machine you are used?
Ans. 
I have experience working with various tonnage molding machines, including 50-ton, 100-ton, and 200-ton machines.
• 50-ton molding machine

• 100-ton molding machine

• 200-ton molding machine
Answered by AI
Add your answer
Q4. What is draft angle in plastic?
Ans. 
Draft angle in plastic is the degree of taper or slope applied to the vertical walls of a plastic part to facilitate its ejection from the mold.
• Draft angles are typically recommended to be between 1-3 degrees for most plastic parts

• Draft angles help prevent the part from getting stuck in the mold during ejection

• Examples of draft angles include adding a slight taper to the sides of a plastic cup or the walls of a plastic
Answered by AI
Add your answer
Q5. What is parametric modelling?
Ans. 
Parametric modelling is a design approach where the model is defined by a set of parameters and rules that govern its shape and size.
• Uses parameters to define the shape and size of the model

• Allows for easy modification of the design by changing parameters

• Enables creation of complex designs with interconnected features

• Commonly used in CAD software like SolidWorks and Autodesk Inventor
Answered by AI
Add your answer
Q6. How to solve plastic defects issue in plastic?
Ans. 
Plastic defects can be solved by identifying root causes, adjusting processing parameters, using quality materials, and implementing proper maintenance.
• Identify root causes of defects such as improper molding conditions or poor material quality

• Adjust processing parameters like temperature, pressure, and cooling rate to optimize production

• Use high-quality materials to ensure consistency and durability of the final produ...read more
Answered by AI
Add your answer
Q7. Cad test on NX Software 2306 version? Plastic parts devlop in cad softwares?
Ans. 
Yes, CAD tests can be conducted on NX Software 2306 version. Plastic parts can be developed in CAD software.
• CAD tests can be performed on NX Software 2306 version to ensure compatibility and functionality.

• CAD software allows for the design and development of plastic parts with precision and accuracy.

• Features like 3D modeling, simulation, and analysis tools in CAD software aid in the development of plastic parts.

• Example...read more
Answered by AI
View 2 more answers

Quantitative and qualitative reasoning, electrical and electronics basics

Q1. Projects based , basic electronics concepts
Add your answer
Q2. Embedded projects related questions
Add your answer