Thermal spray spray welding repair hard turning processing super hard tool

       

Thermal spray spray welding repair hard turning processing super hard tool

Thermal spraying and spray welding to repair hard turning processing super-hard tools Thermal spraying and spraying welding to repair surface unevenness, unevenness, turning problems such as unmoving, chipping, and non-wearing in turning processing, and the disadvantages of adopting grinding technology1, Low processing efficiency 2, grinding burns (damaged parts), please call Zhengzhou Hualing brand marketing department. Mechanical parts have been corroded and worn in harsh environments for a long time, and they have not met the working requirements. Due to the high cost of these parts, it is particularly advantageous for parts remanufacturing technology. For worn and corroded mechanical parts, the hardness is above HRC50 after plasma spray welding of nickel-based alloy tungsten carbide thermal spray welding. When the thermal spray spray welding process is regenerated, the surface of the workpiece will appear uneven, the sprayed layer is suddenly cooled, and it is easy to produce cracks, Coating pores, cracks, pores, sand holes and other defects. For these defects, common tools (hard alloy cutter heads, ceramic cutters) have non-wear and chipping problems. Zhengzhou Valin has repaired the nickel-based alloy tungsten carbide powder after repairing. BN-S20 material blade, the performance of this BN-S20 material blade: good wear resistance, high hardness, strong impact resistance, good toughness, high temperature resistance. BN-S20 brand tool is a machine-clamped indexable blade, which is also suitable for processing spray welding layer and spray coating hard surface: Wc tungsten carbide spray welding layer, Ni nickel base alloy spray welding layer, CO cobalt base alloy surfacing layer, Hastelloy spray welding layer, Ni60 spray welding layer, 88WC12CO, 86WC10CO4Cr and chromium carbide spray welding layer processing; can process spray welding layer and spray layer above HRC65, it is a kind of composite hard surface processing and super hard processing tool special brand suitable The parts and materials used for spray welding are generally: ① Subject to impact load, requiring high surface hardness and good wear resistance, vulnerable parts, such as sand blaster blades, crusher tooth plates, excavator bucket teeth, etc.; ②Geometric shapes Relatively simple large-scale wearing parts, such as shafts, plungers, sliders, hydraulic cylinders, chute plates, etc.; ③ low-carbon steel, medium-carbon steel (carbon content below 0.4%), total manganese, molybdenum, and vanadium content <3 % Of structural steel, nickel-chromium stainless steel, cast iron and other materials. Thermal spray spray welding generally includes, but is not limited to, nickel-based alloy, iron-based alloy and cobalt-based alloy spray powder. According to the spray welding hardness of different alloy spray coatings, they are used to repair mechanical parts or increase metal surface properties; spray coatings The thickness can be from 0.01 to several millimeters; the hardness of the spray coating/spray welding layer is generally above 50HRC, the hardness of the spray welding layer and spray coating of some parts requiring wear resistance is generally between HRC55-65, and the hardness of some spray welding layers exceeds HRC65 or more , The spray welding layer and spray layer machining tools have always been a problem that limits the hard surface post-processing technology. Compared with spray coating, spray welding coating has significant advantages. The performance of the cutting tool grade BN-S20 for processing spray welding layer: 1, BN-S20 tool is suitable for processing high hardness spray welding layer with surface hardness between HRC45-79, such as Ni60, Fe65 and Wc carbonization with surface hardness above HRC65 Tungsten spray welding layer. 2. BN-S20 super-hard tool is a material grade of CBN tool. Valin super-hard tool is independently developed for the processing characteristics of high-hardness materials and alloy surfacing layer and spray welding layer. It is a national key scientific and technological research project of production, education and research. Achievements, utility model patented products. 3. Suitable for cutting and processing the following hard surface spraying spray welding: flame spraying, oxyacetylene flame powder spraying, oxyacetylene flame wire spraying, oxyacetylene flame spraying, supersonic flame spraying (HVOF), arc spraying, plasma spraying, atmospheric plasma spraying , Low-pressure plasma spraying and other hard surface cutting processing. 4. Suitable for cutting the spray welding layer and spray layer of the following materials: Wc tungsten carbide spray welding layer, Ni nickel-based alloy spray welding layer, CO cobalt-based alloy surfacing layer, Hastelloy spray welding layer, Ni60 spray welding layer, 88WC12CO, Removal of 86WC10CO4Cr and carbonized chromium spray welding layer; also suitable for rough machining and finishing of high hardness alloy steel. Example of cutting parameters for processing spray welding layer and surfacing layer of BN-S20 grade: Processing case A, take processing of cobalt-based alloy spray material as an example, the thickness of the spray layer is 2mm; the hardness of the spray layer is HRC60; the linear velocity V=70--130m /min; cutting amount 0.7-0.8mm/r; cutting depth ap=1.7mm; tool life: 150 minutes of service life of each blade edge (excess roughness as the tool change standard); 8 cutting edges ; One blade can use two shifts without changing the blade. Processing case B, take the processing of Wc tungsten carbide spray welding layer with a hardness above HRC65 as an example, using linear speed V=85M/min; tool penetration ap=0.65mm; BN-S20 shows nothing in terms of processing efficiency and tool life Alternative advantage processing case C, processing ni60 nickel-based alloy spray welding layer, using linear speed Vc=180m/min high-speed cutting, which is 6-10 times the life of the ceramic blade. BN-S20 brand tool is a machine-clamped indexable blade, which is also suitable for processing spray welding layer and spray coating hard surface: Wc tungsten carbide spray welding layer, Ni nickel base alloy spray welding layer, CO cobalt base alloy surfacing layer, Hastelloy spray welding layer, Ni60 spray welding layer, 88WC12CO, 86WC10CO4Cr and chromium carbide spray welding layer processing; it can process spray welding layer and spray layer above HRC65. It is a special brand for composite hard surface processing and super hard processing tools. The pictures of the commonly used arbor blades for processing thermal spray welding repair workpieces are as follows:

Chengdu Tungsten carbide thermal spray processing, spray manufacturer, Japanese technology, support customization!

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Blade performance: Hardness around HRC97, suitable for processing high-hardness materials between HRC35-HRC79 hardness, and also suitable for high-speed cutting of ordinary gray cast iron and ductile iron, with a perfect balance of impact resistance and wear resistance. It can be used for high-speed and high-efficiency finishing; it can also be used on ordinary machine tools for rough machining and semi-finishing under low/medium speed; widely used in gray cast iron, wear-resistant alloy cast iron, sand, white cast iron and various cast steels. Processing of hardened steel materials. It can withstand large cutting depths and large passes, and can adapt to intermittent cutting. Application industry: Rough and fine turning of high-hardness materials after heat treatment, such as gears, bearings, gear shafts, spindles, rollers, ball screws, and other workpieces after heat hard turning; high-hardness alloy steel and heat-resistant steel in the mining machinery and cement machinery industry , Turning of wear-resistant steel and alloy surfacing materials; turning of cast steel parts; rough, finishing, and interrupted cutting of various hardened workpieces, nitrided workpieces, and carburized workpieces. After the heat treatment of the mold, the deformation must be repaired, and the turning is used instead of grinding and hard turning. All purchases of our Zhengzhou Hualing super hard tools all quality three guarantees, full technical tracking service. Thermal spray spray welding repairs hard turning processing super-hard tools (the turning belt grinding process improves the processing efficiency)