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Pouring system part for casting and moulding method thereof

A technology of gating system and molding method, which is applied in the direction of casting molding equipment, molds, mold components, etc., can solve the problems of gating system damage, complex material ratio, low strength, etc., to prevent strength reduction, excellent processing performance, The effect of simple preparation method

Inactive Publication Date: 2017-09-01
NINGXIA KOCEL ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when making the gating system, the ceramic sprue tube must be cut off with a high-speed cutter, and the cut refractory material must be wrapped with tape to connect them together, which is troublesome to operate
After pouring, the pouring system is damaged, and a large amount of industrial dust and industrial waste are generated after boxing. Waste disposal is time-consuming and laborious. It can be seen that the pouring system composed of ceramic sprue pipes brings a lot of inconvenience to the operation.
[0004] For this reason, Chinese Patent Application No. 200910117239.6 discloses a paper sprue tube for casting and its forming process, using waste paper pulp, sinterable filling material, bonding material, and reinforcing agent, moisture-proof agent material, adopts vacuum adsorption molding However, the sprue pipe combined with waste paper pulp and organic binder has the following disadvantages when supplying high-temperature molten metal: a large amount of smoke is generated due to thermal decomposition, and the molten metal may leak; in addition, the combination of waste The sprue pipe of paper pulp and organic binder material, due to the lack of rigid network structure in the material, has low strength and cannot be applied to various gating systems
In addition, Chinese Patent Application No. 201510723033.3 discloses a paper sprue pipe for casting and its manufacturing method, using organic fibers, inorganic fibers, sintered refractory materials, binders, waterproof and moisture-proof agents, reinforcing agents, filter aids and Flux, mechanical forming, hot pressing and shaping processing, but it still has the defects of complex material ratio, large gas output during carbonization, and a large amount of gas causing pores, which makes castings scrapped, and cannot be applied to casting systems with various requirements.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0082] The gating system components for casting prepared by the preparation method of the present invention are subjected to measurement of dimensional accuracy, flattening resistance strength, resistance to molten iron scour temperature, and strength tests after anaerobic carbonization.

[0083] Dimensional accuracy measurement is to measure the dimensional stability of the inner diameter of gating system components for casting. Measure at room temperature, use a vernier caliper to measure the inner diameter of any point of gating system components for casting, and the relative error of all measurement points should be within 0.2-1%.

[0084] The flattening strength test adopts the TST-A513-C paper tube flat and vertical pressure testing machine of Dongguan Test Instrument Co., Ltd., and the gating system components for casting are placed horizontally on the sample platform of the testing machine, facing the tested Force is applied to the part, the testing machine records the ...

Embodiment 1

[0088] Embodiment 1 adopts the vacuum adsorption molding method.

[0089] 1. Pulping, according to the mass percentage, add 20% waste cartons and water into the disintegrator, and the waste cartons are processed into a coarse pulp with a length of 1-5 mm by the disintegrator. The fine pulp is made into organic fiber pulp, which is put into the pulp tank, and the mass concentration of organic fiber pulp is 1%.

[0090] Put 1% of the carbon fiber into water at a speed of 60 r / min, and stir for 24 hours to obtain an inorganic fiber slurry. The mass concentration of the inorganic fiber in the water is 1%.

[0091] Add 5% clay, 5% kyanite, 30% epoxy resin, and 39% mullite into the mixer and mix evenly.

[0092] At a rotating speed of 60r / min, add the inorganic fiber slurry, mixed refractory material and binder in sequence to the slurry tank, and stir for 0.5h to obtain the slurry, and pump the slurry into the quantitative box for maintenance The rotation speed is 60r / min.

[009...

Embodiment 2

[0096] Embodiment 2 adopts the vacuum adsorption molding method.

[0097] 1. Pulping, according to the mass percentage, add 20% waste cartons and water into the disintegrator, and the waste cartons are processed into a coarse pulp with a length of 1-5 mm by the disintegrator. The fine pulp is made into organic fiber pulp, put into the pulp tank, and the mass concentration of organic fiber pulp is 3%.

[0098] Put 15% carbon fiber and 15% ceramic fiber into water at a speed of 100r / min, and stir for 24 hours to obtain inorganic fiber slurry. The mass concentration of inorganic fiber in water is 1%.

[0099] Add 10% clay, 5% kyanite, 20% furan resin, and 15% wollastonite into the mixer and mix evenly.

[0100] At a rotation speed of 100r / min, add the inorganic fiber slurry, mixed refractory material and adhesive in sequence to the slurry tank, and stir for 0.8h to obtain the slurry, and pump the slurry into the quantitative box for maintenance The rotation speed is 100r / min cy...

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PUM

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Abstract

The invention discloses a pouring system part for casting and a moulding method thereof. To solve the technical problem, strength of a pouring system part for casting needs to be raised. The pouring system part for casting is composed of the following materials (by weight): 20-60% of organic fiber, 1-30% of inorganic fiber, 10-30% of a refractory filler and 20-69% of an adhesive. The method comprises steps of slurrying, moulding and drying. In comparison with the prior art, the pouring system part for casting contains organic fiber, inorganic fiber, refractory aggregate and the adhesive, flame is lowered during pouring, strength reduction due to combustion of organic fiber is prevented, cracks of the pouring system part for casting due to heat shrinkage caused by anoxic carbonization of the organic adhesive are prevented, and size measurement is accurate. Test results of anti-flattening strength, molten iron scouring temperature resistance and strength after anoxic carbonization are obviously more excellent than test results of the prior art. The product is environment-friendly and light in weight and has excellent processability. The preparation method is simple and can be suitable for pouring systems with various requirements.

Description

technical field [0001] The invention relates to a gating system component used in casting technology and a forming method thereof, in particular to a paper sprue pipe and a forming method thereof. Background technique [0002] During casting, resin sand is usually used to form a sand mold with a cavity, and at the same time, the injection port, gate, runner and ingate for supplying high-temperature molten metal liquid to the cavity are formed, which are collectively referred to as the gating system, and further form a row Air hole, riser, air outlet. The above-mentioned gating system, vent hole, riser, and air outlet are usually integrally formed with resin sand, and the gating system can also be composed of ceramic sprue tubes, risers, and sprue cup components. [0003] In the case of integrally forming the above-mentioned gating system with resin sand, it is unavoidable to complicate the component composition of the gating system, and it is easy to mix the casting resin s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08
CPCB22C9/082
Inventor 惠国栋马斌悍
Owner NINGXIA KOCEL ENERGY CO LTD