Green laser pointer has various kinds of applications

Slender (hollow) shaft laser hardening: axial length of 2 600 mm, the material is 40Cr and 45 steel, runout (central deflection) δ <2 mm. The plant uses Induction Hardening scrapped due to the deformation of ultra-poor. The use of laser hardening runout of δ ≤ 1 mm deformation. Organization, hardness [4] are all qualified. The inner surface of the laser hardening (3) cylindrical thin-walled parts: outer diameter 60 mm, wall thickness of 8 mm, length of 106 mm. The inner surface of the quenching diameter <0 1 mm deformation, using conventional heat treatment process, diameter and ovality surpassed poor. Laser quenching is a success. The short preheating time ofchina laser pointeris one of the most remarkable characteristics ofchina laser pointer.
Automotive Steering Case: General Motors Company Saji Nuo (Saginaw) steering factory (1974) first quenching the laser used in industrial mass production, handling in the malleable iron shell body surface wear the most serious part of the five wide and 1 5 ~ 5 mm deep 0 25 0 35 mm hardened zone, hardness 64 HRC, the life of 104 laser surface transformation hardening (laser hardening) laser hardening metallic materials subjected to laser light exposure in the solid state photographs, the surface is rapidly heated to above the austenitizing temperature, and fast laser to stop the radiation self-quenched martensite a process. The working voltage ofchina laser pointeris the important parameter ofchina laser pointer.
The laser hardening for pearlitic gray iron, ferritic gray iron, ductile iron, carbon steel, alloy steel, martensitic stainless steel, aluminum alloy. The finer organization of laser hardening of steel materials than the conventional heat treatment, hardness increased by 15% to 20%, significantly improved wear resistance, shown in Table 1. MM200 type wear tester, the wear resistance of the four kinds of steel laser quenching the specimen was determined and compared with the ordinary heat treatment sample. The results show that the wear resistance of laser quenching the specimen quenching and tempering at low temperature sample increased by about 50% [1] increased by 15 times than the quenching and high temperature tempering sample. Times. (5) engine block and cylinder: the United States General Motors EMD diesel engine laser heat treatment production line completed in 1978. The working voltage ofchina laser pointershould be included in the instruction ofchina laser pointer.
5 kW CO2 lasers in the lining of the cast iron cylinder liners to deal with a width of 2 mm deep 0 to 5 mm spiral hardened zone. (6) Beijing Daheng automobile engine cylinder wall for laser hardening, laser power 900 W, scanning speed 40 mm / s, hardening bandwidth 5 mm deep 0 25 ~ 0 3 mm, the hardness of 63 HRC. The service life three times. Others, such as: precision shaped guide surface, spindle pole gear mold, cutting tools, reed, etc.. Combination; heat-affected zone of the substrate, the deformation is small; the extent of dilution of the substrate (typically 2% to 8%). Laser Surface Melting Treatment laser glazing, a high energy density laser beam on the metal surface, continuous scan, the formation of a thin layer of melted matrix endothermic effect of liquid metal in the molten bath to 106 ~ 108 K / s speed of cooling and solidification can refine casting, to reduce segregation. The light of china laser pointer should be carefully adjusted.
The formation of a high degree over the supersaturated solid solution, metastable and even amorphous, improve surface wear, corrosion, and antioxidant properties. 5.1 Application examples (1) casting of Al - Si alloy grain refinement: Al - Si alloy casting organization is the primary Si + (Al - Si) eutectic. After laser melting, the primary Si from the original about 60μ refine and increase mm to 1 ~ 4μ hardness. (2) the pearlite matrix of gray cast iron (250 HV), laser surface melting, the Organization for the tiny white cast iron containing martensite type solidification structure of 800 ~ 950 HV, abrasive wear performance significantly improve. Ferrite matrix ductile iron (180 HV), laser surface melting, the organization primarily for the small white cast iron type with martensite solidification organization 400 to 950 the HV, with good wear resistance. green laser pointer has various kinds of applications.