Riser mold and method for preparing riser with exhaust structure
A mold and vent technology, applied in the riser field, can solve the problems of severe physical sand sticking, too much sand for the riser, and difficulty in unpacking the roll neck, so as to improve the collapsibility, improve the strength and toughness of the roll neck and the surface of the roll. Quality, convenient sand cleaning effect
Active Publication Date: 2021-03-23
江苏凯达重工股份有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: in order to solve the existing riser production process, the riser uses a lot of sand, after the thick section non-dry sand is poured with high-temperature molten steel, under the action of high-temperature molten steel, the crystal water in the non-dry sand The reaction of solidified fat and solidified grease produces gas that precipitates into molten steel, forming diffuse inclusions, affecting the surface quality, strength and toughness of the roll neck, making it difficult to unpack the roll neck, and serious technical problems of physical sand sticking. Air vent holes are added in the dry sand to avoid the formation of dispersed air slag holes in the molten steel, thereby improving the strength, toughness and surface quality of the roll neck, improving the collapsibility of non-dry sand, and facilitating sand cleaning
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[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0032] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invent...
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Abstract
The invention discloses a riser mold and a riser preparation method with an exhaust structure. The riser mold comprises a base, a shell and a mold core, the shell is of a hollow structure and is arranged on the base, the mold core is arranged on the base, the interior of the mold core is hollow and the mold core is arranged in the shell, a space is formed between the mold core and the shell, the space is filled with non-dry sand, and at least one exhaust hole is formed in the surface of the non-dry sand towards the interior of the non-dry sand. The riser mold and the riser preparation method with the exhaust structure have the advantages of simple structure of the riser mold, beneficial exhaust, simple and convenient preparation process step and the like.
Description
technical field [0001] The invention belongs to the technical field of risers, and in particular relates to a riser mold and a method for preparing a riser with an exhaust structure. Background technique [0002] Cast steel roll riser sand is mostly made of mine clay sand mixed with an appropriate amount of clay, bentonite, and water. After being baked in a coal-fired and gas-fired industrial furnace to above 400°C for a period of time, the riser sand is completely dry and has a It can only be used at a certain temperature. This process is cumbersome to operate, takes a long time to prepare, and produces a lot of solid waste, which does not conform to the national policy of environmental protection and resource conservation. With the implementation of the national green environmental protection policy, mine sand resources are in short supply, and natural non-drying sand has begun to be used in the production process of rolls. Due to the large size of cast steel rolls and a ...
Claims
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IPC IPC(8): B22C9/08B22C7/00
CPCB22C7/00B22C9/088
Inventor 许健周国祥许云鹏
Owner 江苏凯达重工股份有限公司