The chemical composition of the wear-resistant layer of the alloy has a carbon content of 4 to 5%, a chromium content of 25 to 30%, a volume fraction of Cr7C3 carbide in the metallographic structure of 50% or more, a macrohardness of HRC of 56 to 62, and chromium carbide. The hardness is HV1400 to 1800. Since the carbide is vertically distributed in the wear direction, the wear resistance is more than doubled even when compared with the cast alloy of the same composition and hardness. The wear resistance comparison with several typical materials is as follows:
(1) with low carbon steel; 20 ~ 25: 1
(2) with as-cast high-chromium cast iron; 1.5 to 2.5:1
NM400 wear plate is a high-strength wear-resistant steel plate with high wear resistance. Brinell hardness value of 400 (HBW) is mainly used to provide protection for occasions or parts that require wear resistance, so that equipment life is longer and maintenance is reduced. The maintenance and downtime brought about, correspondingly reduce the investment of funds.
Wear-resistant steel plate has high wear resistance and good impact performance. It can be cut, bent, welded, etc. It can be connected with other structures by welding, plug welding, bolting, etc. It has time saving in the process of maintenance. It is widely used in metallurgy, coal, cement, electric power, glass, mining, building materials, brick and tile industries, etc. Compared with other materials, it has high cost performance and has been favored by more and more industries and manufacturers. .
High Speed Beam Drilling Machines
1. The cnc machines is mainly composed of main body, CNC slipway, drilling spindle box, tool changer, clamping device, measuring device, electric system, hydraulic system, cooling system, chip box, etc..
2. Three slipways are all controlled by servo motor, guided by precision linear roller guide and driven by AC servo motor and ball screw to ensure the positioning accuracy. The spindles are precision spindles with high rotary accuracy and high rigidity, and driven by servo motor, with broad scope of application, rotation speed can be stepless changed in a wide range to meet the needs of a variety of speeds.
3. The vertical drilling machine is equipped with three inline type tool changers, and every tool changer can load 4 tools. While drilling, the tools can be changed automatically to meet the needs of different drilling diameters. The machine is equipped with flange width detection and web height detection device, which can effectively compensate for the deformation of the workpiece to ensure the processing accuracy.
4.The main advantage of TD series high speed CNC drilling machine is it`s high speed drilling.It`s rotation speed can reach 3000rpm.
Due to it using the carbide drill bits, single hole processing efficiency increased to more than 5 times than the normal speed machine, the overall production efficiency more than 2 times than the normal machine. For example: 22 mm diameter, thickness 20 mm workpiece, CBD series drilling one hole need about 30 seconds, TD series can be controlled within 4 seconds.
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Shandong EN FIN CNC Machinery Co., Ltd , https://www.shuofangcn.com