Special mounting wrench for large-diameter hollow molybdenum alloy ejector head
A molybdenum alloy, large-diameter technology, applied in the field of special wrenches, can solve problems such as short service life, and achieve the effect of convenient and fast use
Pending Publication Date: 2019-03-29
TAIZHOU HUACHENG TUNGSTEN & MOLYBDENUM MFR
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Problems solved by technology
[0003] The existing molybdenum alloy plug is generally a solid overall structure formed by a mold at one time. When the molybdenum alloy plug is hot-rolled through the steel pipe, the surface and the steel pipe are usually damaged due to friction, and the service life is short. The diameter of the plug is less than After the size is specified, a new plug needs to be replaced
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[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:
[0020] Such as Figure 1 to Figure 4 As shown, the large-diameter hollow molybdenum alloy head special installation wrench includes a handle 1 and a wrench head 2, the handle 1 is connected to the wrench head 2, the wrench head 2 is set in a ring structure, and one side of the wrench head 2 ring is evenly distributed with at least Two cylindrical teeth 3, the cylindrical teeth 3 correspond to the installation structure hole 24 of the large-diameter hollow molybdenum alloy plug 21 split type bottom plate 22 adapted to the wrench, and the center of the split type bottom plate 22 is the ejector pin installation hole 23.
[0021] In this embodiment, the ends of the cylindrical teeth 3 are provided with straight-side chamfers or arc-shaped chamfers. A preferred embodiment of the present invention is that 3 or 4 circular holes are evenly distributed on th...
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The invention relates to a special mounting wrench for a large-diameter hollow molybdenum alloy ejector head. The special mounting wrench comprises a wrench head and a handle, wherein the handle is connected to the wrench head; the wrench head is set to be a circular-ring-shaped structure; at least two cylindrical gears are uniformly distributed on one surface of the circular ring of the wrench; the cylindrical gears correspond to mounting structure holes of a split type bottom plate of the large-diameter hollow molybdenum alloy ejector head adaptive to the wrench; and the end parts of the cylindrical gears are equipped with straight-sided chamfers or arc-shaped chamfers. Compared with the prior art, the special mounting wrench adopts a wrench head circular ring with a long handle, and thecylindrical gears are arranged on the circular ring of the wrench head, so that the bottom plate of the ejector head firstly rotates to enter threads on the bottom of a hollow molybdenum alloy ejector head main body during mounting, and then, the cylindrical gears of the wrench head are inserted into the mounting structure holes of the bottom plate of the ejector head, and therefore, the bottom plate is smoothly mounted to the bottom of the ejector head main body by pulling the handle. The special mounting wrench is especially suitable for mounting the bottom plate of the large-diameter hollow molybdenum alloy ejector head, is convenient and quick in use, and saves time and labour.
Description
technical field [0001] The invention relates to the technical field of molybdenum alloy plugs for piercing seamless steel pipes, in particular to a special wrench for installing a split bottom plate of a large-diameter hollow molybdenum alloy plug. Background technique [0002] Existing molybdenum alloy plugs are generally used to wear seamless steel pipes such as stainless steel pipes and alloy steel pipes. Molybdenum alloy is an alloy obtained by adding titanium, chromium and other elements through sintering process with molybdenum as the base material. Among refractory metals, molybdenum and its alloys have good thermal conductivity, electrical conductivity and low expansion coefficient. (1100~1650°C) has higher strength and is easier to process than tungsten, so it is used in the electron tube, electric light source, metal processing tool industry, and the perforated plug for die-casting and extrusion molds is also used in the aerospace industry. . [0003] The existin...
Claims
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IPC IPC(8): B25B13/48B25B13/50
CPCB25B13/48B25B13/50
Inventor 徐文进
Owner TAIZHOU HUACHENG TUNGSTEN & MOLYBDENUM MFR