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I applied via Recruitment Consulltant and was interviewed in Mar 2022. There was 1 interview round.
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I applied via Recruitment Consulltant and was interviewed in Apr 2023. There were 3 interview rounds.
Molding is a manufacturing process where a liquid or pliable material is poured into a mold to create a specific shape.
Molding involves heating a material until it becomes pliable, then shaping it using a mold.
Common types of molding include injection molding, blow molding, and compression molding.
Examples of molded products include plastic bottles, car parts, and toys.
Plastic parts are developed using methods like injection molding, blow molding, and thermoforming.
Injection molding is a common method where molten plastic is injected into a mold.
Blow molding is used for hollow parts like bottles, where plastic is blown into a mold.
Thermoforming involves heating a plastic sheet and shaping it over a mold.
Other methods include rotational molding, extrusion, and compression molding.
Shrinkage in plastic refers to the reduction in size of a plastic part after it has been molded.
Shrinkage occurs as the plastic cools and solidifies after being injected into a mold.
It is important to account for shrinkage when designing molds and parts to ensure proper dimensions.
Factors affecting shrinkage include material type, mold temperature, cooling rate, and part geometry.
Common methods to compensate for shrink...
NPD in industry refers to New Product Development, which involves the process of designing, creating, and bringing new products to market.
NPD involves identifying market opportunities and customer needs
It includes concept development, design, prototyping, testing, and commercialization
NPD teams often collaborate with various departments such as marketing, engineering, and manufacturing
Successful NPD can lead to increas...
Costing of complete products can be calculated by considering materials, labor, overhead, and profit margin.
Calculate the cost of materials required for the product
Estimate the labor costs involved in manufacturing the product
Factor in overhead costs such as utilities, rent, and equipment depreciation
Add a profit margin to cover additional expenses and generate profit
Consider any additional costs such as shipping, pack...
Gate & runner in molding are channels through which molten material is injected into the mold cavity.
Gate is the opening through which molten material enters the mold cavity
Runner is the channel that connects the gate to the sprue or main injection point
Proper design of gates and runners is crucial for ensuring even distribution of material and preventing defects
Examples: Submarine gate, edge gate, hot runner system
The purpose of gate & runner in molding is to control the flow of molten material into the mold cavity.
Gate controls the flow of molten material into the mold cavity
Runner distributes the molten material throughout the mold
They help in achieving proper filling of the mold and reducing defects like air pockets or incomplete filling
Different types of gates and runners are used based on the molding process and material be
Moment and shear force diagrams are graphical representations of the internal forces acting on a structural element.
Moment diagram shows the variation of bending moment along the length of the beam.
Shear force diagram shows the variation of shear force along the length of the beam.
Both diagrams are essential for designing and analyzing structures.
They help in determining the maximum bending moment and shear force that ...
I applied via Recruitment Consulltant and was interviewed in Apr 2023. There were 3 interview rounds.
There are seven main categories of plastic materials.
Thermoplastics
Thermosets
Elastomers
Composites
Biodegradable plastics
Engineering plastics
High-performance plastics
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
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.
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
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
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
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
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...
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...
I applied via Naukri.com and was interviewed in Dec 2023. There was 1 interview round.
I applied via Walk-in and was interviewed in Mar 2024. There was 1 interview round.
CT current can be calculated by dividing the primary current by the turns ratio of the current transformer.
CT current = Primary current / Turns ratio
Primary current is the current flowing through the primary conductor
Turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding
Lockout is a safety procedure used to ensure that machinery or equipment is properly shut off and cannot be restarted until maintenance or servicing is completed.
Lockout involves isolating energy sources to prevent accidental startup.
Lockout devices like padlocks and tags are used to physically lock equipment.
Lockout procedures must be followed to prevent accidents and injuries.
Examples of lockout include locking out e...
IP65 for panel refers to the level of protection against dust and water ingress.
IP65 rating means the panel is dust tight and protected against water jets from any direction.
The first digit '6' indicates the level of protection against solid objects like dust.
The second digit '5' indicates the level of protection against water ingress.
Commonly used in outdoor or industrial applications where the panel may be exposed to...
TCS and Master Trip Relay are protective devices used in electrical systems to prevent damage during faults.
TCS stands for Time Current Characteristic Relay, which operates based on the relationship between time and current to trip the circuit breaker during faults.
Master Trip Relay is a relay that receives signals from various protective relays and initiates a trip signal to disconnect the circuit in case of a fault.
B...
LSC 2A and LSC 2B are standards for lighting in commercial and industrial buildings.
LSC 2A and LSC 2B are part of the Lighting Power Density (LPD) requirements in building codes.
LSC 2A is for commercial buildings while LSC 2B is for industrial buildings.
They specify the maximum allowable power consumption for lighting per unit area in a building.
For example, LSC 2A may require a maximum LPD of 0.9 watts per square foot
REF protection is used to prevent damage to equipment from electrical faults. High impedance protection is used for sensitive equipment, while low impedance protection is used for power systems.
REF protection is used to detect ground faults and prevent damage to equipment.
High impedance protection is used for sensitive equipment that requires high accuracy and low fault currents.
Low impedance protection is used for pow...
ANSI codes are used to identify various types of protection devices in electrical systems.
ANSI code 50/51 is for instantaneous overcurrent protection
ANSI code 67 is for directional power protection
ANSI code 87 is for differential protection
ANSI code 59 is for overvoltage protection
I applied via Referral and was interviewed in Oct 2023. There was 1 interview round.
Design engineers must adhere to applicable standards to ensure quality and safety of products.
Design engineers should be familiar with industry-specific standards such as ISO 9001, ASME Y14.5, and ASTM.
Adherence to standards ensures product quality, safety, and compliance with regulations.
Standards may vary depending on the industry and type of product being designed.
Regular updates and training on new standards are es
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