PTA Powder
Main application:Repair and
strengthen workpiece surface, significantly
Welding method:PTA welding
Main equipment:PTA welding
machine
Flame core temperature: about 10000℃
Technological characteristics:PTA has high
temperature, concentrated energy, stable combustion, small heat affected zone,
fast welding speed, high production efficiency, easy to obtain low dilution
rate of surfacing layer, surfacing layer and workpiece matrix are metallurgical
bonding,, bonding strength is high.
PTA welding technology is one of surface
strengthening methods, which has high deposition rate, low dilution rate, and
could be applied with many kinds of powder. The manufacturing craft of PTA
powder is normally gas atomization, which reduces satellite of powder. We
supply 4 main categories of PTA powder: Nickel-based alloy powder, Iron-based
alloy powder, Cobalt-based alloy powder and Mixed Powder.
Nickel Based Alloy Powder possesses high
temperature resistance and wear resistance, it is the most popular alloy powder
applied by PTA welding both domestically and internationally. Coating hardness
is within the range of HRC 30-60. It could be applied to various industries
like agriculture, plastic, paper, marine and steel making where wear and
corrosion protection needed. Some examples are plunger, moulds, pump leaf and
screw.
Iron Based Alloy Powder is more widely used
and a more economic choice. With high abrasive resistance, it is more commonly
applied to mining tools, drilling tools and mixers of iron and steel making
industry, coal industry, shaft, oil and energy industry.
Cobalt Based Alloy Powder is recommended
for corrosion and oxidation resistance, with better hot hardness values than
equivalent Nickel based alloy powder. It is widely applied to steel making
industry, coal industry and mining industry.
Mixed powder mainly refers to NiCrBSi
mixing with other hard-phase powder such as cast tungsten carbide and other cemented
alloy powder, which allows the powder better hardness around HRC60 and
excellent abrasion resistance.
Mixed powder is more often used for mining
equipment for oil sands, lignite, oil drilling tools, excavator buckets,
extrusion screws for plastic processing, grain and oil processing, etc.
PTA Powder,Iron Based Alloy Powder,Cobalt Based Alloy Powder,Nickel Based Alloy Powder Luoyang Golden Egret Geotools Co., Ltd , https://www.xtcwelding.com
High-strength valve cover pump field test showed a benign development
Recently, the high-strength valve cover pump in Dagang Oilfield Company Wuchang field trial achieved remarkable results, completely solve the small size of the traditional ordinary pump (diameter 38 mm to 57 mm pump) on-site use of the valve cover off the problem, the structure and flow Road adaptability of the field test also achieved satisfactory results. Currently, three kinds of small-size pump on-site test of a Taiwan, a long time of continuous production has reached more than 3 months, short more than 1 month, the scene reflects the good production. The problem of the production of the valve on the suction pump has plagued the production of machineries by oil fields for several decades. It is an important factor and potential hazard for the shutdown of oil wells. There are 397 pumping wells in No.5 Oil Extraction Plant, of which the total number of pumping wells below 57 mm in diameter reaches more than 200. In order to alleviate the production contradiction between the oil production plant and the whole oilfield valve closure and eliminate or substantially reduce such shutdown wells, the technical personnel of the fifth factory developed and used the high-strength valve cover pump after years of research and development. High-strength valve cover pump valve on the movers Seoul valve and valve Seoul flow channel structure improvements, follow the API international standards. The new structure, on the basis of improving the bearing area of ​​the upper movable valve, enlarges the flow area of ​​the upper and lower plunger of the plunger, solves the problem of the abrasion of the valve cover and reduces the liquid passing through the group of the plunger Flow coefficient. The field test production of high-strength valve cover pump showed a benign development trend, achieved the purpose of optimization and structural design improvement, adapted to the needs of on-site production, and eliminated the shutdown well caused by valve closure.