Multifunction supersonic flame spraying with oxygen kerosene supersonic flame spraying (HVOF coating) and air kerosene supersonic flame spraying (HVAF) function, the flame temperature and velocity can be adjusted continuously in a large range, can meet various requirements of spraying materials, the preparation of high bonding strength, low porosity, can be prepared abrasion resistance, corrosion resistance, thermal insulation, sealing, conductive coating, in mechanical manufacturing,aerospace,water conservancy and electric power,metallurgy,petrochemical, paper and leather and other fields have a broad application prospect.

In the metallurgical industry, there are a variety of roller and roller need to wear the reinforcement or repair, wherein, the continuous annealing furnace bottom roller is an important one. The roller surface of the nodulation phenomenon, in fact is adhesive wear. In order to strip production caused by reduced nodulation loss, thermal spraying method widely used in roller surface spraying usually. NiCr-Cr3C2 coating,which has high temperature oxidation resistance, thermal shock resistance, wear characteristics, can make the bottom roller continuous working for a long time at high temperature, and subjected to thermal shock cycles. When the working temperature of the furnace roller exceed 900 DEG C, the general spraying Co alloy. With the advantages in the richly endowed by nature of carbide ceramic spraying supersonic flame spraying and metallurgical industry, there is a great demand for carbide metal ceramic coating, so get a lot of applications. Multifunction supersonic flame spraying Co based WC coating on galvanized roll into pickling The surface is reinforced to improve the service life.

In the oil industry, machinery and equipment, such as a large number of pumps,valves,drilling machinery, transport equipment, lifting equipment, pipelines, their life is an important factor affecting the wear and corrosion.Multifunction supersonic HVOF coating to strengthen and repair the pump piston rod has a good application effect, piston rod spraying WC coating after strengthening, wear resistance is greatly improved and the service life is increased several times. In the field of petroleum machinery, wear seat and shaft parts is also more serious. Because of the Co based WC coating prepared by multifunction supersonic flame spraying, low residual stress,the thickness of the coating can reach 3mm or more thick,and the coating and the substrate the combination of good in wear under heavy load, the dimensions of recovery has a good application.

Pump,cylinder,valve is composed of the basic unit of hydraulic and pneumatic systems, corrosion wear and medium is the key factor of restricting its life. Using the multifunction supersonic HVOF coating technology of pump shaft, piston rod, valve for strengthening and repairing, these parts require higher accuracy and surface finish. Multifunction supersonic flame spraying layer after the grinding precision and surface finish are very high, can meet the requirements.

Hard seal ball valve is widely used in industry,it relies on the seal between the valve core and valve seat to control fluid off, because does not require the use of non-metallic sealing materials, has the advantages of compact structure,reliable sealing,corrosion resistance and strong features,it is widely used in chemical industry. The wear and corrosion resistance of metal ceramic coating prepared by a certain the thickness of the spool and hard seal ball valve, and grinding to the required precision and smoothness, can greatly improve the sealing performance and service life. Wenzhou Chengda special valve factory using multifunction supersonic flame spraying technology to strengthen the hard seal ball valve, greatly improve the performance and the service life of the valve, and can meet the needs of oil chemical industry special conditions, praised by users.

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