Processing and molding manufacturing method of center shaft of special shaft sleeve for textile machinery by taking 5Cr2NiMoVSi magnesium alloy as material
A technology of textile machinery and magnesium alloy, which is applied in the processing and forming of mandrels, mandrels and their materials, can solve problems such as fatigue wear, poor evenness, and reduced life of shaft sleeves, and achieve improved fluidity and stability Sexuality, reducing the content of impurities, and strong bending resistance
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[0007] Example one
[0008] A method for processing and forming the mandrel of a special shaft sleeve for textile machinery using 5Cr2NiMoVSi magnesium alloy. The mandrel material of the shaft sleeve mainly includes the percentage content of the following elements: C 0.74%, Ti 0.10%, Si 0.62% , Mn 0.42%%, Cr 1.3%, Mo 0.9%, V 0.54%, Ni 0.4%%, and the rest are magnesium and its impurities. The following processing techniques are used: (1) Preparation of the powder: Pretreatment of the powder: annealing treatment, annealing temperature is 220 ℃; classification treatment; uniform mixing; small particles into large particles or agglomerates, (2) for pressing The formed shaft sleeve mandrel blank is sintered, the sintering temperature is: 1050℃, the sintering time is: 2.3h, sintered in a gas furnace with ammonia gas, and slowly cooled in the air, (3) the powder-formed shaft sleeve Carry out recrystallization annealing treatment, heat it to 820℃, keep it for 4.1h, slowly cool it in the...
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[0009] Example two
[0010] A manufacturing method for processing and forming the mandrel of a special shaft sleeve for textile machinery using 5Cr2NiMoVSi magnesium alloy. The mandrel material of the shaft sleeve mainly includes the percentage content of the following elements: C 1.20%, Ti 0.35%, Si 0.87% , Mn 0.54%, Cr 4.0%, Mo 1.1%, V 0.67%, Ni 0.7%, the rest is magnesium and its impurities. The following processing techniques are used: (1) Preparation of powders: Pretreatment of powders: annealing treatment, annealing temperature is 240℃; classification treatment; uniform mixing; small particles are made into large particles or agglomerates, (2) for pressing The formed shaft sleeve mandrel blank is sintered, the sintering temperature is: 1100℃, the sintering time is: 2.7h, it is sintered in a gas furnace with ammonia gas, and slowly cooled in the air, (3) the powder-formed shaft sleeve Carry out recrystallization annealing treatment, heat it to 870℃, keep it for 4.8h, slowly...
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