Stress Relieving Steel
At PGI, we stress relieve and anneal steel plate, parts, castings and fabrications. This heating process removes the inherent stress properties in steel, thereby improving machinability and allowing us to grind parts to higher flatness standards.
We routinely perform metal stress relieving per customer specifications. Our furnace runs every day of the week Monday – Friday. Stress Relieving is typically performed on ASTM A36, ASTM A572, 1020 Steel, and Hot Roll steel plates that have been flame cut or plasma burned, whereas metal annealing is typically performed on 4140 steel and 1045 steel that has been flame or plasma cut. Furnace temperatures reach 1200 degrees for stress relieving and 1600 degrees for annealing. We determine the ramp time and soak time by the type of material and thickness of the parts.
We also anneal and provide stress relief to help prevent cracking and to improve the machining and grinding process. Our car bottom furnace is capable of stress relieving or annealing parts that are up to 8′ x 8′ x 14′ long and up to 40,000 lbs. We can also quote special heat cycles to meet your individual part requirements.
What is Steel Stress Relieving?
Stress relieving is a technique to remove or reduce the internal stresses created in a metal. These stresses may be caused in a number of ways, ranging from cold working to non-uniform cooling, or stresses from fabricating. Stress relieving is usually accomplished by heating a metal below the lower critical temperature and then cooling uniformly.
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