The use of external engineering skills in bearings
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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>External engineering skills in the use of bearings The use of external engineering skills in bearings
1. Overview of mechanical products is often caused by failure of individual parts; parts failure is often caused by partial appearance failure; corrosion starts from the appearance of the part; conflict wear occurs on the exterior of the part; fatigue cracks have an outward extension in the outer surface. Engineering skills can make the expiration of the vulnerable parts of the vulnerable parts long; the overall function of the product is improved. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
The bearing is a typical external working part; the bearing has slender wear, fatigue, corrosion and other failures; it can make the whole set of bearings fail; can improve the bearing operation appearance through the external engineering skills; improve the life of the bearing.
1 Appearance engineering skills are pre-disposed by appearance; after surface coating, appearance modification or multiple appearance skills combined treatment; changing the shape, chemical composition, arrangement and stress of solid metal appearance or non-metallic appearance; System engineering of the appearance of demand.
2 Appearance engineering skills are a new subject that has been constructed and agile for nearly ten years for the needs of electromechanical products in high temperature, high pressure, high speed, heavy load and corrosive medium, and harsh working conditions; multidisciplinary interspersed, inductive Significant features of composite; can be used to promote product quality improvement and environmental protection improvement. Appearance engineering skills in the treatment of wear and corrosion and supply functional coating; has outstanding results.
3 The primary function of external engineering skills:
A. Improve the appearance of wear resistance or corrosion resistance, fatigue resistance, oxidation resistance, radiation protection,
B. Improve the heat transfer or heat insulation of the exterior,
C. Improve the conductivity or insulation of the exterior,
D. Improve the magnetic permeability or electromagnetic shielding of the appearance,
E. Improve the long face, reflective or absorbing properties of the appearance,
F, improve the adhesion or non-stickiness of the appearance,
G. Improve the oil absorption or dryness of the appearance,
H. Improve the conflict coefficient of appearance (progress or decline),
I. Improve the decorative appearance or antique old-fashioned appearance.
4 Appearance engineering skills are system engineering skills; including A, external engineering basic theory:
Appearance failure analysis theory, appearance conflict wear theory, appearance corrosion and protection theory, appearance interface and compound theory.
B. Appearance engineering skills and composite appearance engineering skills:
Compound appearance skills, chemical conversion film skills, appearance coating (thick film) skills, appearance film skills, appearance chemical bonding skills, friction chemical film skills, appearance mechanical strengthening skills.
C, appearance processing skills:
Appearance pre-treatment skills, machining skills on the outer surface, special processing skills on the outer surface.
D. Appearance quality control and control:
Appearance of several characteristics and testing, mechanical properties and testing of appearance, physical and chemical properties and testing, and profiling skills.
E. Appearance of external engineering skills:
Outer layer layout depiction, external surface data depiction, outer surface process depiction, exterior engineering workshop depiction and exterior engineering vehicles, external engineering skills economic analysis.
F, commonly used appearance skills:
Surfacing skills, welding skills (low vacuum welding, laser cladding, etc.), electroplating, brush plating and electroless plating, thermal spraying skills (flame spraying, arc spraying, plasma spraying, blasting spraying, high energy supersonic spraying), bonding skills , painting skills, physical and chemical vapor deposition skills (vacuum evaporation, ion sputtering, ion plating, etc.), chemical thermal treatment, laser transformation hardening, laser amorphization, laser alloying, electron beam transformation hardening, ions Write and so on.
G. The meaning of the use of external engineering skills in the rolling body of the bearing (A) The thin layer of the external surface function of the external tumbler; it has higher wear resistance, corrosion resistance and high temperature resistance than the matrix data. Function; for example, carbon steel ball is treated by external surface instead of stainless steel for corrosive occasions;
(B) For special medium and large-sized bearings; change the concept of "returning after use"; change to the concept of "re-production"; change the original to correct the improvement of the original function. Promote the concept of repair.
(C) Energy-saving materials; conducive to environmental protection; fit the national sustainability strategy.
(D) Promote the development of high-tech industries.
2, ion writing external processing skills 1 the definition of the basic principle:
Ion writing external treatment is to ionize the atom of an element into an ion; and accelerate it at a voltage of ten to several hundred kilovolts; the surface of the workpiece that is injected into the vacuum target chamber after obtaining a higher speed An ion beam processing skill.
2 ion writing skills features:
A, significantly improve the wear resistance, corrosion resistance, high temperature resistance and light, electricity, superconductivity and other functions of the data,
B. The outer alloy layer is not bound by the traditional alloying rules such as phase equilibrium and solid solution; in principle, any element can be written into any base metal.
C. There is no interface between the ion writing layer and the matrix data; there is no problem that the connection failure occurs and falls off.
D, no environmental pollution 3 ion writing equipment:
The ion writer mainly includes an ion source that generates ions and a target chamber with an evacuation system. The ion source has a solid ion source, a gas ion source, and a solid/gas ion source.
4 ion writing skills use:
A. It is used for ion writing of things, tools and molds; greatly improves the life of the rolling molds B, the appearance of rollers and steel balls for large bearings; obtaining the required high temperature, corrosion resistance, electromagnetic, self Lubrication and other characteristics; especially for large-scale parts of the substrate can use relatively low-cost data; ion writing; obtain the desired surface alloying layer; contact high-energy ion beam or laser surface treatment skills; can reach the desired function; Dispose of all the parts in the production of parts that cannot be completed by heat treatment or processing methods.
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