Member for producing castings
A technology for castings and components, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve problems such as a large amount of industrial waste, waste disposal time, and inability to apply gating systems.
Inactive Publication Date: 2008-06-04
KAO CORP
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AI Technical Summary
Problems solved by technology
In addition, when forming a gating system, etc., it is necessary to cut the refractory material with a high-speed cutter such as a diamond cutter, and wrap the cut refractory material with tape to connect them, which is troublesome.
In addition, after pouring, there are following problems: the pouring system, etc. are damaged due to thermal shock, etc., and a large amount of industrial waste is generated, and it takes a lot of time to dispose of it.
[0005] However, when molten metal is supplied to a gating system combining organic fibers and an organic binder, there are problems in that large shrinkage occurs due to thermal decomposition, and molten metal leaks from the gating system, etc.
[0007] However, since the foundry paper sand cores described in the above documents do not contain binders, they cannot be applied to gating systems corresponding to various cavity shapes.
Method used
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Examples
Experimental program
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Embodiment 1
[0071] Using the following raw material slurry, papermaking, dehydration, and re-drying were carried out as follows to obtain a thickness of 1mm and a basis weight of 440g / m 2 base paper for the paper tube. The following paper tubes were manufactured from the obtained base paper for paper tubes, and a runner for a gate (parts for casting, weighing about 30 g) having the following physical properties was obtained."
[0072]
[0073] After dispersing the following blended organic fibers and inorganic fibers in water to prepare a slurry of about 1% (relative to water, the total weight of the organic fibers and inorganic fibers is 1% by weight), the following was added to the slurry: A binder and the following coagulant were used to obtain a raw material slurry having a mixing ratio (weight ratio) of organic fibers, inorganic fibers and binders of the following value.
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Abstract
A part for casting obtained by converting base paper for paper tubing into a tube and containing an organic fiber, an inorganic fiber, and a binder. The part is preferably obtained by winding the base paper into tubing. The part preferably contains 10 to 70 parts by weight of the organic fiber, 1 to 80 parts by weight of the inorganic fiber, 10 to 85 parts by weight of the binder. The organic fiber is preferably pulp fiber.
Description
technical field [0001] The present invention relates to a casting manufacturing member formed by forming a base paper for a paper tube into a tube shape, a manufacturing method thereof, and a method of manufacturing a casting using the casting manufacturing member. Background technique [0002] When manufacturing castings, generally, a mold having a cavity (with a sand core if necessary) is formed using foundry sand, and at the same time, an injection port, a sprue, a runner, and an ingate (hereinafter referred to as They are called gating system), and further form vent holes, risers, and gas outlets. Such gating systems, vent holes, risers, and gas outlets are usually integrally formed with casting sand and molds, or using gating system components made of refractory materials such as pottery and bricks to form the gating system. [0003] When the above-mentioned gating system and the like are formed integrally with the casting mold, it is difficult to complicate the arrang...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22C1/00B22C9/08
Inventor 津浦德雄小林洋昭高城荣政仲井茂夫惣野时人
Owner KAO CORP