AISI 4340 alloy steel is heat treated at 830°C (1525°F) followed by quenching in oil. Tempering AISI 4340 alloy steel should be in the heat treated or normalized and heat treated
A 2 KW high power CO 2 laser has been used for the present study into laser quenching of 40CrNiMoA steel specimens using a de focused beam, considering the incident angle of the laser beam. The objectives of the present study are two fold(1) to investigate the effect of the laser quenching parameters on the hardness, microstructure and profile of the quenched zone based on the
40crnimoa Steel Round Bar Aisi 4340 Alloy Steel , Find Complete Details about 40crnimoa Steel Round Bar Aisi 4340 Alloy Steel,Steel Round Bar,Aisi 4340 Alloy Steel,40crnimoa from Supplier or Manufacturer Dalian Jingtai Industry Trade
40CrNiMoA can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc. TEL:+86 80247006 E
The wide investigation on the fracture surfaces of both SCC and CFC specimens with two metallurgical conditions and various heat treatment processes was carried out. The result shows that in the case of the experimentation using 40CrNiMoA steel and distilled water, the fracture surface features and their varying regularity of both SCC and CFC are very similar.
The performance of 40CrNiMoA has not deteriorative phenomenon after temperature cycling experiments. Therefore, compared to the heat treatment (HT) and cryogenic treatment before tempering (CT 1), the cryogenic treatment after tempering(CT 2) can improve the comprehensive performance of 40CrNiMoA steel. It also can increase the attended performance and working life in the formidable
To date, there has been little detailed work reported concerning the laser quenching of the groove of the piston head in a large diesel engine. A 2 KW high power CO 2 laser has been used for the present study into laser quenching of 40CrNiMoA steel specimens using a de focused beam, considering the incident angle of the laser beam. The
Preheat and post heat weld procedures are followed while welding this steel by established methods. Heat Treatment AISI 4340 alloy steel is heat treated at 830°C (1525°F) followed by quenching in oil.
Heat treatment of steels is the heating and cooling of metals to change their physical and mechanical properties, without letting it change its shape. Heat treatment could be said to be a method for strengthening materials but could also be used to alter some mechanical properties such as improving formability, machining, etc.
A kind of gas nitriding method catalyzed by rare earth for 40CrNiMoA alloy steel was researched in this article. Effect of temperature on surface hardness of gas nitriding method catalyzed by rare earth, change law of layer depth with time at 500 °C were carried out and compared with normal gas nitriding. Based on these researches, gas nitriding method catalyzed by rare earth was optimized.
The invention relates to a heat treatment process for a 65Mn spring washer. The heat treatment process comprises the following stepsblanking; electric spark perforation of basic bores; linear cutting and forming; correction by a fitter; heat treatment; performance test; and surface treatment; wherein during quenching in the step of heat treatment, firstly, the 65Mn spring washer is subjected
4340 steel is usually supplied ready heat treated. If further heat treatment is required annealed 4340 should be heated slowly to 830 865°C and after adequate soaking at this temperature quench in oil.
The method comprisesfirst cooling the 40CrNiMoA material to a temperature ranging from 80DEG C to 85DEG C at a rate of 2 3DEG C/min, conducting heat preservation for 0.5h 1h; then performing further cooling to a temperature ranging from 180DEG C to 185DEG C, and conducting heat preservation for 2h 3h; and then, raising the temperature to 160DEG C 170DEG C still at a rate of 2 3DEG C/min,
Steel > Steel Round Bars
May 21, 2019 · Heat TreatmentIn very simple words I am going to explain The heat treatment process consists of a succession of heating and cooling cycles applied to a metal or alloy in order to obtain the desired properties, such as hardness, ductility, tensile strength, toughness, grain size, etc.
Hot rolled steel 4340/40CrNiMoA/34CrNiMo6/1.6565/SNCM439, US $ 700 1,000 / Metric Ton, Shanghai, China, Unite Steel, Round bar.Source from Shanghai Unite Steel
Solution treatment is a broad term in heat treating used to refer to the heating of a material to temperatures sufficient for the dissolution of its soluble phases. It is then held for a time until it is quenched, causing the material to retain the properties of the solution.
We pride ourselves in our commitment and the level of service offered and aim to work closely with customers, to ensure we meet your expectations. Our objective is to keep your business operations running as smoothly as possible on a day-to-day basis.