Technical Topics-第3页-Changsha Langfeng Metallic Material Co., Ltd.

Hardness of titanium carbide ceramic rods
Titanium carbide ceramic rod hardness is not higher than HRC62, HRC60 is the best, because it is combined with high manganese steel substrate, there is a feature in the strong impact, extrusion conditions, the surface of the phenomenon of rapid hardening, So that while maintaining toughness and plasticity of the hardened layer with good wear resistance.
The basic concept of thermal spraying
Spraying materials after spraying equipment with a heat source, form injection, before reaching the by spraying the surface of the substrate, the flight time only a few thousand a fraction of a second or less. In such a short period of time, it is heating, melting or half melted, the small and dispersed droplet formation, ran to the substrate surface, be into flat folding shape small pieces, and the previously generated flat piece and is covered by the successor, quickly formed by many flat fold into the cover, is the spray coating. The higher heat humidity, drop impact velocity, the greater the formation of the coating is more dense. Coating performance is associated with many factors.
Upsetting forming ability
Ball (softened) annealed countersunk head screw, hex socket head cap bolts cold forging process, the original organization of steel will directly affect the forming ability of cold heading. Cold heading process in the local area of ??plastic deformation up to 60% -80%, for which the requirements of steel must have good conductility. When the chemical composition of the steel is constant, the microstructure is the key factor that determines the plasticity. Generally, it is considered that the coarse lamellar pearlite is not conducive to cold heading and the fine spherical pearlite can significantly improve the plastic deformation ability of the steel. Medium-carbon steels and medium-carbon alloy steels with high amount of high-strength fasteners are used for balling (softening) annealing before cold forging so as to obtain even and fine spherical pearlite to better meet practical production needs. For mild steel rod softening annealing, the heating temperature and more choice at the critical point of the steel up and down insulation, heating temperature generally can not be too high, otherwise it will produce three cementite precipitation along the grain boundary, resulting in cold heading cracking, and for Medium-carbon alloy steel wire rod isothermal annealing, AC1 + (20-30%) heating, the furnace cooled...
Arc spraying process introduction
The arc spraying process uses two filamentous metal spray materials. The two wires are respectively connected to the positive and negative poles of the power supply (the power supply is a safe voltage lower than 36V), and the wire is automatically, evenly and continuously fed through the wire feeding device. In the conductive nozzle in an arc spray gun, when the ends of the two wires come into contact with each other, the resulting arc rapidly melts the end of the wire and atomizes the molten metal into fine particles by means of high-speed compressed air, The speed of jet to the surface of the workpiece.
Thermal spray atomization method of making alloy powder equipment
Atomization device, which includes a metal funnel, the middle of the package, the atomizer (also known as the nozzle), cylinder, operating platform, piping system, high pressure water pump, centrifugal water pump, water tank, Centrifugal pumps, tanks, but need to be equipped with gas cylinder group, and the corresponding valve and table. This is the core equipment of atomizing milling, because they are non-standard equipment, so are designed and manufactured, which is the key part of the atomizer, which sets the device production efficiency has a great impact.
TiCN powders’application
Ti (C,N) powder has the advantages of TiC and TiN, with high melting point, high hardness, wear resistance, oxidation resistance, corrosion resistance and other characteristics, and has good thermal conductivity,electrical conductivity and chemical stability, is an ideal Tool coating material.Titanium carbonitride coating can improve the bonding strength with the matrix, while the composite material can have a variety of properties. Titanium carbonitride is an all-purpose coating material, in the impact mode, injection mold and cutting tools in the field of performance is particularly good. Titanium carbonitride powder is easily peeled off, so that cost can be saved in the production of expensive injection mold parts. With the original coating tool to obtain a 5-fold life,you can peel the coating and then re-coating,and then get 5 times the length of life, and keep the cycle going. For more information please link: www.langfengmaterials.com, Please contact us: sales@langfengmaterials.com

‹1 234 5 ›