Proto-D Engineering Quality Engineer Interview Questions, Process, and Tips for Experienced

UTS is the maximum stress a material can withstand before breaking, while yield strength is the stress at which a material begins to deform plastically.

• UTS stands for Ultimate Tensile Strength

• Yield strength is also known as the yield point

• UTS is the maximum stress a material can withstand before breaking

• Yield strength is the stress at which a material begins to deform plastically

• Yield strength is always lower than UTS

• B...read more

Heat treatments are processes used to alter the physical and mechanical properties of materials through heating and cooling.

• Annealing

• Quenching

• Tempering

• Normalizing

• Hardening

• Case hardening

The 7 tank powder coating process involves seven stages of cleaning and preparation before the actual powder coating is applied.

• Degreasing

• Rinsing

• Surface conditioning

• Phosphate coating

• Rinsing

• Drying

• Powder coating

8D is a problem-solving methodology used to identify, correct, and prevent recurring problems.

• 8D stands for 8 Disciplines

• It is a structured approach to problem-solving

• It involves a team-based approach

• The 8 disciplines include steps such as defining the problem, identifying root cause, implementing corrective actions, and preventing recurrence

• It is commonly used in the automotive and manufacturing industries

Kanban is a lean manufacturing system for just-in-time production, while Poka-yoke is a technique for mistake-proofing processes.

• Kanban is a visual system that helps manage inventory and production flow.

• It involves using cards or signals to indicate when to produce and deliver items.

• Pokayoke is a method of mistake-proofing that aims to prevent errors from occurring.

• It involves designing processes and tools in a way tha...read more

Classification of materials refers to grouping materials based on their properties and characteristics.

• Materials can be classified based on their chemical composition, physical properties, and intended use.

• Examples of classification systems include the periodic table for elements and ASTM standards for metals.

• Materials can also be classified as natural or synthetic, organic or inorganic, and metallic or non-metallic.

• Cl...read more

The thickness of powder coating and CED varies depending on the specific application and requirements.

• The thickness of powder coating is typically measured in mils (thousandths of an inch) or micrometers.

• The desired thickness of powder coating can vary depending on factors such as the type of substrate, the intended use of the coated object, and the desired level of protection.

• For example, in automotive applications, t...read more