Quality Control

Incoming inspection is carried out for every batch of major raw material & consumables like :

• Pig iron
• Mild steel scrap.
• CRCA scrap.
• Moulding paints.
• Bentonite.
• Silica Sand.

In-process inspection is carried out for all the processes as per control plan of the quality manual like :

• Our unique sand laboratory tests sand properties such as compressive strength, permeability, moisture content, loss on ignition, volatiles, AFS size & clay content.
• Metal properties such as metal chemistry before & after pouring with an in-house-spectrometer, metal temperature during tapping & pouring with an infrared non-contact type pyrometer. We also use a silicon carbon analyzer for chemical cross-checking.
• Core gas determination to detect gas in cores.
• Checking the scratch hardness of the core with a scratch tester.
• Test the mold hardness of each mold with a portable mold hardness tester.

Final inspection is carried out within the setup for every heat poured :

• Microstructural analysis using a microscope & image analyzer software.
• The dimensions of the castings are randomly checked at regular intervals before shipment. For new developments, 100% dimensions are checked for the first sample.
• Mechanical properties of the casting such as tensile strength, elongation & yield strength using an in-house tensile testing machine.
• Chemical properties of the castings using an in-house spectrometer.
• Hardness testing of castings using hydraulic BHN machine & Poldi tester.

We check every incoming raw & machined parts that come into our machine shop to make sure the following conditions are met :

• Before beginning the machining process, raw castings may have visual flaws.
• Before transporting the component for additional processing, the dimensions of any pre or outsourced machining are verified to the nth degree.
• The assembly child parts are inspected as per quality plan.

We have first piece inspection process. As per frequency, the parts are checked. In case of any deviation observed, the same is reworked & sent for the process.

Final inspection is carried out as per customer requirements. If customer requires hydro testing, we are doing the same as per customer requirements.