Flame Hardening Steels

Flame hardening is an accelerated economical method for selectively hardening specific areas on the surface of a part.

Flame hardening steels.

The hardness of the flame hardened case is a function of the carbon content of the steel and thus can range up to 65 hrc. The hardness of steels can be increased using various processes such as surface flame and induction hardening as well as nitriding. Each flame hardening method lends itself better to certain applications over others and it s helpful during the design phase if. We provide flame hardening on a wide range of materials but the most common are.

Ideal steels for flame hardening have carbon 0 4 to 0 5. For example flame hardening of teeth of very large gears shall not disturb the dimensions of gears. Premier commercial heat treater for spin flame hardening of wheel gear components. Thermtech offers spin flame hardening for components up to 2 500 lbs.

As we continue to discuss heat treating design issues let s do an overview of four distinct flame hardening methods we use at ftsi to meet various client needs. The process is simple. 4140 4150 1045 1060 ductile cast iron. Mn is a very potent element to increase the hardenability of the steels and thus its presence increases the depth of hardening as it.

Flame hardening is similar to induction hardening in that it is a surface hardening process. Stationary progressive spinning combination. With a 45 max od. Flame hardening is a surface hardening process used on medium carbon mild or alloy steels such as 1045 4140 4340 or cast irons to produce a hard wear resistant surface case on the part.

Flame hardening steel involves heating the steel and then cooling it. These flame hardening methods are. Advantages and disadvantages of flame hardening. Also the parts are hardened with little oxidation and decarburization.

The surfaces to be hardened are heated with an array of torch heads that produce a high temperature intense flame for rapid heating of the part surface. If dropped or struck hard it could actually shatter the second part of the process known as annealing involves reheating the steel and. Cheaper steels could be used if flame hardened. There are many benefits to flame hardening.

Heat is applied to the part being hardened using an oxy acetylene or similar gas flame on the surface of the steel being hardened and heating the surface above the upper critical temperature before quenching the steel in a spray of water. Flame hardening is performed to selected metal surfaces of carbon and alloy steels cast and ductile irons and some stainless steels followed by an appropriate quenching method.