2257 results about "Metal machining" patented technology

The invention relates to a continuous preparation device for composite stirred semi-solid slurry, and belongs to the technical field of machining semi-solid metal machining. The device comprises a discharge outlet 1, a graphite plug 2, a graphite lining 3, a stainless steel tube 4, a heating element 5, a cooling element 6, a stirring shaft 7, a thermal insulating layer 8, a bearing 9, a bearing seat 10, a gear 11, a discharge handle 12, a feeding inlet 13, an oblique baffle 14, a rotary blade 15, a stirring blade 16 and the like. The semi-solid slurry is prepared through the following steps: after feeding an alloy fuse into the device, throwing onto the inner wall of a stirring chamber through the rotary blade rotating at high speed, enabling the fuse to flow downward along with the inner wall and flow downward along with the baffle when encountering the oblique baffle, then throwing the fuse on the inner wall of the stirring chamber by the rotary blade, after circulating the processes for two times, enabling the fuse to flow downward along the wall of the graphite lining at the lower part, carrying out convection at the bottom of a stirring bucket through driving of the stirring blade, generating a great deal of crystal nucleus in the fuse in the process, and directly growing into spheres. The flowing velocity of the slurry can be controlled through adjusting a gap between the graphite plug and the graphite lining, the semi-solid slurry can be subjected to rheoforming together with conventional equipment such as die casting, rolling and mold forging, and semi-solid ingot can also be continuously prepared.

The present invention is machining process of gear box casing for TM type centrifugal compressor, and belongs to the field of metal machining technology. The gear box casing consists of one upper casing and one lower casing mainly. The lower casing is machined through fine milling the bottom, drilling hole, machining the combining surfaces, sides and holes, washing, oiling and other steps; the upper casing is machined through fine milling the combining surfaces, drilling holes, fine boring the bearing holes, cleaning, oiling and other steps. The present invention has simple machining process, low production cost, high machining precision and other advantages.

The invention discloses green micro-emulsification metal machining liquid, which comprises materials by weight percentage: 20%-30% of base oil, 30%-50% of a nonionic surfactant, 5%-10% of an anion surfactant, 5%-8% of an antirusting agent, 3%-4% of a couplant, 0.5%-1% of a corrosion inhibition antisludging agent, 5%-6.9% of an extreme pressure agent, 0.3%-0.5% of an antifoaming agent, 0.2%-0.5% of bactericide and the balance water. The micro-emulsification metal machining liquid with plant oil and synthetizing ester as the base oil is excellent in antioxidation, obvious in abrasion resistance, capable of partial ecotoxicity of mineral oil, environmental-friendly, biodegradable, suitable for processing various materials and excellent in antirust performance on nonferrous metal.

A rotary cutting tool having the general form of a circular disk with cutting inserts secured tangentially to the circumference of the tool's body, for metal machining in general and for machining cam lobes. The cutting inserts have concave side surfaces and concave cutting edges.

A punching machine installed in the machine base of a roller shape forming machine in a metal working system and controlled to punch holes on a metal sheet material being delivered through the roller shape forming machine during operation of the roller shape forming machine. The punching action, i.e., the cycling of the closing and opening actions of the punch mold of the punching machine is set to match with the delivering speed of the metal sheet material in the roller shape forming machine so that the punching operation of the punching machine is continued during processing operation of the roller shape forming machine.

A cutting insert for metalworking operations has an insert core with a pair of cutting portions having cutting tips extending therefrom such that a toolholder having a pocket to accept such a core is suitable to accept different cutting inserts having a common core plus different cutting portions. As a result, for example, an 80° diamond, a 55° diamond and a 35° diamond cutting insert may all be utilized within a common toolholder. The invention is also directed to a toolholder that will accept such a variety of cutting inserts.

The invention belongs to the technical field of metal machining, and particularly relates to a preparation machining method of a large-diameter pipe material and a special-shaped pipe fitting. The preparation machining method comprises the following steps of prefabricating a hollow blank by punching, carrying out isothermy or hot mould combined extrusion on the hollow blank, machining the inner and outer surfaces of an extruding tube blank, and carrying out multi-pass cold or hot power cone spinning on the machined tube blank; carrying out intermediate heat treatment (which can be annealing or solution treatment) on a semi-finished pipe material product; repeatedly and alternately carrying out multi-pass power cone spinning and the intermediate heat treatment, and carrying out power spinning on the finished pipe material product; carrying out multi-pass composite spinning forming on the semi-finished pipe material product after heat treatment so as to obtain the special-shaped pipe fitting; and carrying out acid pickling and cleaning on the obtained pipe fitting and special-shaped pipe fitting and then carrying out thermal treatment on the finished product. The preparation machining method of the large-diameter pipe material and the special-shaped pipe fitting provided by the invention has the advantages that the large-diameter pipe material and the special-shaped pipe fitting are prepared and machined, the product organization is uniform, the combination property is high, the forming is effort-saving, the additional value is high, and a product has good popularization and application prospect and definite economic benefits and social benefits.