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AISI 4140 Hardening Furnace
AISI 4140 is defined as a low-alloy steel containing 1% Cr-Mo as a strengthening alloying element. Compared with AISI 4130, it has a higher carbon content, a good balance of strength, toughness, wear resistance, impact resistance and heat treatment ability, but it has poor weldability. AISI 4140 ...
1045 Nitriding Furnace
1045 steel is a high-quality carbon structural steel. Its characteristic is that it has higher strength and resistance to deformation than ordinary A3 steel. Its chemical composition element ratio (%): carbon C: 0.42～0.50; chromium Cr: ≤0.25; manganese Mn: 0.50～0.80; nickel Ni: ≤0.25; phosphoru...
High Speed Steel Oil Quenching
1. Typical High-speed Steel At present, there are about dozens of types of high-speed steel at home and abroad. High-speed steel can generally be divided into two categories,-type is general-purpose high-speed steel, and can be further divided into tungsten, molybdenum and tungsten-molybdenum ser...
Iron-based Powder Metallurgy Industry Development
Combined with the current status and downstream development prospects of iron-based powder metallurgy technology in my country and abroad, the future development direction of iron-based powder metallurgy mainly includes four categories: Further improve the characteristics of high consistency, hig...
Metal Powder Sintering Technology
Powder sintering is a process of reducing the free energy of the system, which is manifested by the flattening of the sintering neck and the surface of the particles, the reduction of the total surface area and surface energy of the system, the reduction of the total void volume and the total sur...
Vacuum Heat Treatment of High-strength Steel and Ultra-high-strength Steel
We usually call steel grades with tensile strength Rr1100~1400MPa as high-strength steels, and steel grades with tensile strength Rm>1400MPa, yield strength RaL>1200MPa and appropriate plasticity and toughness are called ultra-high-strength steels. The vacuum quenching heating temperature o...
Vacuum Heat Treatment of Titanium alloy
Table 1 lists the process parameters of vacuum quenching (solid solution) and aging treatment of titanium alloys for reference. Alloy grade Vacuum/Pa Solution temperature/℃ Time/H Aging temperature/℃ Time/H TC3 10-2~ 10– 3 820~ 920 0.5~2 450~550 2~12 TC4 850~ 950 450~ 550 TC6 860~ 900 50...
Vacuum Heat Treatment of Superalloy
The vacuum heat treatment process of superalloy is shown in Table 1 Alloy grade Solution temperature/°C Solution time/h Cool down Vacuum /Pa Aging temperature/°C Aging time/h Cool down Vacuum/Pa GH37 Once 1180士1 Twice 1050土 10 2 4 Air-cooled 0.1~1 800土10 16 Air-cooled 10—1~10—2 G...
The Quality Effect of Vacuum Quenching
(1) The effect of vacuum quenching on the surface quality of the workpiece ①Reduction of heating oxides under vacuum. ②The influence of the elements. ③The influence of steel type. ④The influence of cooling method. ⑤The effect of tempering. ⑥The influence of oil return from vacuum pump, oil booste...
Vacuum Heat Treatment of Stainless Steel
First look at the following typical materials and parts that require vacuum heat treatment. Austenitic stainless steel is mostly made of sheet metal parts with complex shapes, which require multiple stamping and stretching forming. Annealing treatment is required before and during the forming pro...