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Flux-free Vacuum Brazing of Aluminum Alloys
The brazing of aluminum alloys usually requires the use of flux, and the use of flux brazing is likely to cause the following problems: (1) It is inevitable that there will be flux inclusions, which will affect the compactness of the brazing joint; (2) The corrosive flux residue is highly corrosi...
Saw Hob Vacuum Furnace Application
Before the vacuum gas quenching furnace is widely used, the heat treatment of high-speed steel generally uses a vacuum oil quenching furnace. Although the vacuum oil quenching furnace treatment solves the problem of surface oxidation of the workpiece, it has the following obvious defects: ①The co...
Vacuum hardened spring steel wire
Application of Vacuum Hardening Spring Steel Wire Springs and elastic components are basic parts with a large quantity and a wide range, and can be said to be ubiquitous. As a control element in power machinery, electrical appliances, instruments, and weapons, it is also a very critical part. It...
Vacuum heat treatment process for gear quality control
The heat treatment quality problems that may occur during the gear vacuum quenching and cooling process mainly include: 1.Insufficient hardness after vacuum quenching. The hardness of vacuum quenching is uneven, and the depth of vacuum quenching hardening is not enough 2.The hardness of the core ...
Special equipment industry gear vacuum heat treatment
As a key part of special equipment such as cranes and amusement facilities, gears are mainly used to transmit power and motion, and change the transmission speed ratio through them. Due to the constantly changing speed, the working conditions of the gears are very complicated, which requires the ...
Vacuum Heat Treatment Applications for Metal Machine Tools and Gear Parts
Application 1 Vacuum Quenching of Cr12MoV Steel Triangular Parts Material: Cr12MoV steel Technical requirements: overall 62～65HRC, deformation less than 0.10 mm The parts are: the lower plate press needle, the needle lifter and the thimble on the textile machine. Dimensions of various triangula...
Pay Attention to Vacuum Tempering to Improve the Quality of Quenched Parts
Vacuum tempering of quenched parts is the last process of heat treatment of workpieces. The purpose of vacuum tempering is to prolong the service life of the workpiece. Its function is: stabilize the structure, transform the metastable quenched structure into a more stable tempered structure; sta...
Meeting standards for die vacuum heat treatment
(1) Precautions for mold vacuum heat treatment ①The mold material contains more alloying elements, and elements with higher vapor pressure (Al, Mn, Cr, Si, Pb/Zn/Cu) are prone to element evaporation when heated in vacuum. Therefore, the degree of vacuum during quenching and heating should be prop...
TC4 Titanium Alloy Powder Metallurgy Vacuum Sintering
Taking the production of TC4 titanium alloy parts as an example, the production process of titanium alloy powder metallurgy is shown in the figure. Sponge titanium is made into titanium powder by hydrogenation dehydrogenation (HDH), that is, titanium hydride obtained after hydrogenation of spong...
Vacuum Heat Treatment of Aerospace Fasteners
Aviation fasteners have gone through 5 generations from the beginning to the present. The general trend is that the structure is developing towards light and small size and combination, and the performance is innovating towards high strength and high reliability. There are many types of fasteners...