Multilayer Nano Hard Coating Piston Rod and Its Processing Technology
A technology of hard coating and processing technology, which is applied in the field of piston rods, can solve the problems of hardness, wear resistance, friction coefficient, and insufficient comprehensive performance of service life, and achieve the effects of improving wear resistance, reducing friction, and being easy to repair
Active Publication Date: 2016-03-23
SICHUAN JINXING CLEAN ENERGY EQUIP CO LTD +2
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Problems solved by technology
Because the working environment of the piston rod has high temperature and frequent friction, the piston rod is required to have high requirements in terms of hardness, wear resistance, friction coefficient and service life. Although the traditional piston rod has been improved for many years, its hardness, wear resistance However, the overall performance of resistance, friction coefficient and service life is still insufficient.
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[0028] The present invention will be further described below in conjunction with accompanying drawing:
[0029] Such as figure 1 As shown, the multilayer nano-hard coating piston rod of the present invention includes a rod body 1, and the surface of the base material 8 of the rod body 1 is sequentially provided with a titanium bottom layer 2, a titanium nitride transition layer 3, and a titanium nitride carbide transition layer from inside to outside. Layer 4, titanium oxycarbonitride transition layer 5, α-Al 2 o 3 Ceramic coating 6 and titanium nitride surface layer 7. Among them, the base material 8 of the rod body 1 is 38CrMoAlA (a special nitrided steel); the titanium bottom layer is Ti, with a thickness of about 100nm to 200nm; Titanium carbide transition layer is TiCN, the thickness is usually between 1μm-3μm; titanium oxycarbonitride transition layer is TiCNO, the thickness is usually between 0.1μm-0.5μm; α-Al 2 o 3 The thickness of the ceramic coating is between 1...
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Abstract
The invention discloses a multilayer nano hard coating piston rod which comprises a rod body, wherein the surface of a substrate of the rod body is sequentially provided with a titanium bottom layer, a titanium nitride transition layer, a titanium carbonitride transition layer, an OTiCN transition layer, an alpha-Al2O3 ceramic coating and a titanium nitride surface layer from inside to outside. The invention also discloses a processing process of the multilayer nano hard coating piston rod. The processing process mainly comprises the following steps: cleaning a piston rod body; loading the piston rod body into low-temperature plasma seeping, pouring and plating equipment, and performing nitriding and coating; inspecting and warehousing. According to the multilayer nano hard coating piston rod, the surface of the substrate of the piston rod body is sequentially provided with six coatings from inside to outside so as to form a piston rod with high inner layer toughness, high outer layer rigidity and high abrasion resistance, the rigidity is 20-50GPa, and the surface friction coefficient is 0.1-0.4. Compared with a traditional piston rod, the multilayer nano hard coating piston rod has the advantages that the friction is obviously reduced, the abrasion resistance is improved, the service life of a single piece is prolonged, and furthermore, the multilayer nano hard coating piston rod can be repeatedly repaired on the premise that the rod body is not damaged, so that the cost is lowered.
Description
technical field [0001] The invention relates to a piston rod, in particular to a multi-layer nano hard coating piston rod and a processing technology. Background technique [0002] Piston rods are mostly used in compressors and other products. They are the connecting parts that support the piston to do work. Most of them are used in oil cylinders and cylinders. It is a moving part with frequent movements and high technical requirements. Because the working environment of the piston rod has high temperature and frequent friction, the piston rod is required to have high requirements in terms of hardness, wear resistance, friction coefficient and service life. Although the traditional piston rod has been improved for many years, its hardness, wear resistance However, the comprehensive performance of resistance, friction coefficient and service life is still insufficient. Contents of the invention [0003] The object of the present invention is to provide a multi-layer nano-h...
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IPC IPC(8): F16J7/00
Inventor 鄢强梁政吴涛吴俊李斌
Owner SICHUAN JINXING CLEAN ENERGY EQUIP CO LTD