165results about How to "Meet manufacturing requirements" patented technology

The invention relates to a copper pipe manufacturing method, in particular to a method of utilizing an extruding machine to manufacture a large-diameter thick-wall seamless copper pipe. According to the method, an extruding backing ring and thermal insulation cotton are additionally arranged between an extruding pad and a copper blank in the extruding machine, so that the red copper blank can rapidly heat up and expand after being in contact with the extruding backing ring; the unilateral gap between the extruding backing ring and an extrusion container is smaller than or equal to 1.5mm; the backstreaming of the copper blank from the gap between the extruding pad and the extrusion container in the extruding process is prevented; after the blank is manufactured, the blank is subjected to zero-defect treatment; the surface, in contact with the blank, of a die in the extruding process is preheated; the preheating surface of the die is smeared (lubricated) and extruded by adopting a special copper pipe extrusion lubrication medium; the inner and outer surface quality of the large-diameter thick-wall seamless copper pipe is effectively solved, so that the product quality is effectively improved. The manufacturing method has the advantages that the manufacturing flow is simple; the utilization rate of materials is high; the manufacturing requirements of different specifications of products are met; the manufactured product has the advantages that the whole grain size is uniform; the product performance is good; the service life is long, and the like; and therefore, the product has the advantages of low production cost, strong market competitiveness and the like.