The invention provides a processing method of a self-lubricating phosphor copper ball extrusion die. The processing method of the self-lubricating phosphor copper ball extrusion die is a method of using a series of treatment processes of 4Cr5MoSiV1(H13) normalizing, tempering, quenching, deep cooling, sulfur carbonitriding and the like for performing self-lubricating treatment on a die for extrusion of copper balls. By using the processing method of the self-lubricating phosphor copper ball extrusion die, the die is high in internal hardness and strength, carbide and nitride of ferrum, molybdenum and chromium are generated on the surface of the die, and simultaneously molybdenum and ferrum sulfide is generated. The die is small in deformation and stable in shape due to the high hardness and the high strength of the die, and the carbide and the nitride which are generated on the surface of the die have high hardness, and therefore the die has good wear-resisting performance under supporting of a high strength and high hardness substrate. Furthermore, the molybdenum and ferrum sulfide is of laminar structure, and thereby has good oil storage and lubricating functions, reduces extrusion resistance, and prolongs life of the die.

Processing method of self-lubricating phosphor copper ball extrusion die

The invention provides a production method of an aluminum alloy extrusion die The production method comprises the following steps of A1, saw cutting and rough turning; A2, scribing and drilling; A3,heat treatment; A4, horizontally grinding and finish turning; A5, wire cut electrical discharge machining after polishing; and A6, polishing and combining The aluminum alloy extrusion die produced according to the method is high in strength and hardness value, high in heat resistance, high in impact toughness and high in fracture toughness value

Production method of aluminum alloy extrusion die

The invention discloses a heat treatment method of a 5CrNiMo hot forging die The method comprises the following steps of isothermal annealing, quenching, tempering and salt bath According to the heat treatment method of the 5CrNiMo hot forging die, the hardness, the toughness and the wear resistance of the 5CrNiMo hot forging die are effectively improved through heat treatment on the 5CrNiMo hotforging die, and the service life of the forging die is prolonged

Heat treatment method of 5CrNiMo hot forging die

The invention relates to a heat treatment process of a forging die, in particular to a 5CrNiMo die sulphonitrocarburizing heat treatment process. The provided 5CrNiMo die sulphonitrocarburizing heat treatment process comprises the following process steps: conventional heat treatment, finish turning, preheating, salt bath, tempering and the like. On the basis of conventional heat treatment, a 5CrNiMo hot work die steel is subjected to salt bath so that sulphonitrocarburizing of the 5CrNiMo hot work die steel is finished, when the salt bath lasts for 1 hours, the thickness of a sulphonitrocarburizing layer can reach 0.1 mm, when the salt bath lasts for 2 hours, the thickness of the sulphonitrocarburizing layer can reach 0.2 mm, and the surface hardness of the die is improved. Compared with a gas nitriding heat treatment mode, the 5CrNiMo die sulphonitrocarburizing heat treatment process has the characteristics that the surface hardness of the die is improved, so that the die cannot deform easily, and the service life is prolonged by 60% or above.

5CrNiMo die sulphonitrocarburizing heat treatment process

The invention provides a heat treatment process and device of 21NiCrMo5H steel forge pieces The heat treatment process includes the steps of preheating, heat preservation, fast cooling, air cooling and the like, wherein a hanging heating mode is adopted in the preheating step, the workpieces are heated independently and do not interfere with one another, and overall heating and uniform heat preservation temperature of the workpieces are guaranteed The metallographic phase and the gain size of the 21NiCrMo5H steel forge pieces treated through the heat treatment process both meet the quality requirements, and a quality guarantee is provided for subsequent machining, heat treatment and the like

Ji Lihua

Papers

5CrNiMo die sulphonitrocarburizing heat treatment process

Heat treatment process and device of 21NiCrMo5H steel forge pieces