A stress relief will help reduce the possibility of more abrupt changes in geometry after subsequent machining.
Sub-critical annealing is an ideal way to remove these stresses to allow subsequent forming operations. The temperature ranges for this process typically range from 1250F to 1400F.
Normalizing machined components helps create a homogenous microstructure which helps improve uniform machinability done post normalizing.
This process involves heating the parts above the critical temperature and slow cooling them in order to create a microstructure both more refined due to recrystallization and softer and more ductile regarding hardness and mechanical properties.
Stampings made from low carbon steels like 1035, 1040, 1045, & 1050 typically require water quenching for full hardness response, especially, if they are formed from heavy gauge thicknesses.
This furnace can quench pins and machined barstock that have large cross-sections that have a hard time achieving good core hardness properties when quenched in oil.
ThermTech has several internal quench atmosphere furnaces that are ideal for oil quench hardening a wide variety of sizes of 4140, 4150, & 4340 materials.
Many machined components have intricate details or section size changes that lend themselves to being crack-prone.We watch for problem jobs like this and we can run them through our neutral hardening salt furnace with molten salt quench to avoid cracking.
Between our neutral salt bath furnaces and our larger austempering furnaces we have the capabilities to austemper a wide variety of stamping and machined components.
Machined components made from such alloys as 4320, 8620, and 9310 are typically carburized to increase the surface hardness of the machined surfaces and to increase the core hardness.
Carbonitriding can be perfomed on both heavy gage stampings and low alloy machined components. Typically the case depths needed are in the 0.003" to 0.020" range due to the low hardenability of the steels involved.
Gas Nitriding is the process in which Nitrogen and Ammonia are diffused into a steel product at a low temperature to produce a hard case without the need for quenching from a higher temperature.
ThermTech flame hardens a wide variety of crane wheels and sheaves for the crane and mining industries. We have both polymer and oil quenching capabilities.
ThermTech offers low pressure vacuum carburizing for a wide variety of machined components for both the petrochemical, automotive, and medical fields.
Our newest furnace allows us to offer oil quenching after a low pressure carburizing process done in vacuum.
Many machined components whether they are through hardened or carburized require straightening after heat-treating. We have three mechanical presses with the largest having pressures up to 200 tons.
ThermTech has the capabilities to shot-blast very large machined components up to 96" in diameter and 5000 pounds.
We have two pieces of cryo-treat equipment which are both capable of temperatures of -300F below zero.
Several people in our Quality Department maintain the specification library, write part number specific processes and manage the sub-contracted mechanical testing to insure your parts are exceeding the mechanical requirements for your application.