6 results about "High-speed steel" patented technology

The invention discloses a centrifugal high-carbon, high-boron and high-speed steel composite roller shell and belongs to the technical field of casting. An outer layer of the roller shell is made of a high-carbon, high-boron and high-speed steel material; an inner layer of the roller shell is made of graphitic steel; good metallurgical bonding is achieved by centrifugal casting; an appropriate heat treatment process is adopted for property improvement on the high-carbon, high-boron and high-speed steel composite roller shell; a high-carbon, high-boron and high-speed steel combined roller is fabricated by a hot charging method; the high-carbon, high-boron and high-speed steel composite roller shell can be replaced after being abraded; and the cyclic utilization of a roller shaft is achieved. Compared with a high-speed steel roller by centrifugal casting, the material utilization ratio is increased by more than 30%, and the service life is prolonged by more than 20%.

The invention discloses a manufacture method for a slip sheet of an air conditioner compressor, relating to the parts of air conditioner compressors. The method comprises the steps of: taking the elements in percentage by mass: C 3.2-3.8%, Si 2.0-2.6%, Mn 0.5-1.0%, Cr 0.2.-0.6%, Mo 0.1.-0.6%, V 0-0.5%, B 0-0.1%, Ti 0.04-0.15%, Nb 0-0.5%, Cu 0-0.5%, P < 0.3%, S <0.1% and the balance of Fe; and carrying out smelting, inoculating, casting, grinding, quenching and tempering heat treatment, refining, polishing and ion-sulfurizing to manufacture the slip sheet product of the air conditioner compressor. According to the product, a certain amount of carbides and flake graphite and a tempered martensite substrate with good comprehensive mechanical property are formed in a cast structure, and the manufacture method overcomes the defects of high cost and tedious machining procedures of the traditional high-speed steel or stainless steel slip sheets.

The invention belongs to a combined type cutting tool for milling a wide flat surface of an aluminum alloy, in particular relates to a combined type milling cutter for machining a flat surface of the aluminum alloy. The milling cutter comprises a cylindrical tool pan, a high-speed steel tool mounting handle and a hard alloy tool mounting handle, wherein the high-speed steel tool mounting handle and the hard alloy tool mounting handle are arranged at the bottom of the tool pan; concave grooves are formed on both mounting handles; the high-speed steel tool mounting handle is provided with a high-speed steel tool; the hard alloy tool mounting handle is provided with a hard alloy tool; the tool noses of both the high-speed steel tool and the hard alloy tool and the center of the tool pan form a straight line; and the high-speed steel tool is arranged in a hole of the high-speed steel tool mounting handle, and the height relative to the high-speed steel tool mounting handle is adjustable. The milling cutter has the advantages of simple structure, adjustable diameter and low cost, and is a combined type end face milling cutter which finishes rough milling and fine milling in one feeding process. When the milling cutter is used for milling wide flat surfaces, the working efficiency can be greatly improved and the appearance quality and surface smoothness can be enhanced.

The invention discloses a fixing device for a double-sided running groove of a high-speed steel rolling production line. The fixing device for the double-sided running groove of the high-speed steel rolling production line comprises a bottom cross beam (11) and a water beam (5). Two stand columns are arranged on the bottom cross beam (11) in a spaced manner. A pressing plate (7) is arranged at the upper ends of the stand columns. The pressing plate (7) is connected with the upper ends of the two stand columns. The bottom cross beam (11), the two stand columns and the pressing plate (7) form a frame-shaped structure. The double-sided running groove (4) and the water beam (5) are arranged in the frame-shaped structure, and the double-sided running groove (4) is arranged on the water beam (5). The pressing plate (7) is pressed on the double-sided running groove (4). By the adoption of the technical scheme, every assembly can be manufactured and replaced independently, the manufacturing technology and the material requirement are simple, the cost is low, the replacement and maintenance processes are simple, the double-sided running groove can be effectively protected against looseness and dislocation, the fault rate is low, the mounting time, the dismounting time and the fault treatment time of the running groove can be significantly shortened, and the labor intensity of operators is lowered.