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Liquid lifting pipe for molten aluminum and preparation method thereof

A technology of liquid riser and molten aluminum, applied in the field of liquid riser for molten aluminum and its preparation, can solve the problems of low mechanical strength, no filtering equipment, and service life of sticky aluminum liquid, etc.

Pending Publication Date: 2018-07-06
周志英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a liquid riser for aluminum liquid and its preparation method to solve the existing problems of the liquid riser without filtering equipment, low mechanical strength, sticky aluminum liquid and short service life.

Method used

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  • Liquid lifting pipe for molten aluminum and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 1 The shown riser pipe for aluminum liquid includes a cast iron pipe body 2 and a flange 3, one end of the cast iron pipe body 2 is provided with a flange 3, and the flange 3 is integrally formed with the cast iron pipe body 2; A cast iron flange 3 is added to the upper connection of the riser pipe, and the damage to the riser pipe is avoided when the mold is connected with the riser pipe bolt; the inside of the riser pipe is provided with a filter bag 4, and the front end of the filter bag 4 is provided Snap 401, the design of the filter bag 4 can play a good role in skimming, and at the same time can ensure that the aluminum liquid flows smoothly into the mold, and the filter bag 4 is placed in the liquid riser in a detachable form, which is convenient Cleaning; the inner wall of the flange 3 is provided with an annular groove 5 corresponding to the engagement 401, and the outer periphery of the flange 3 is provided with bolt holes; the inner wall of th...

Embodiment 2

[0049] A riser pipe for liquid aluminum comprises a cast iron pipe body, the inner and outer walls of the cast iron pipe are enamelled with an enamel layer resistant to corrosion by molten aluminum; the mass component of the enamel layer in the enamel layer contains SiO 2 : 40%, B 2 o 3 : 8%, Na 2 O: 13%, Al 2 o 3 : 23.9%, TiO 2 : 6%, CaO: 2%, K 2 O: 1%, CoO: 0.1%, NiO: 3%, Fe 2 o 3 : 3%.

[0050] The preparation method of described liquid riser comprises:

[0051] (1) prepare cast iron pipe body;

[0052] (2) Surface treatment of cast iron pipe body: cleaning, shot blasting and shot blasting are performed on the inner and outer surfaces of cast iron pipe in sequence;

[0053] (3) Preparation of enamel glaze: the formula of enamel glaze in terms of mass percentage is: SiO 2 : 40%, B 2 o 3 : 8%, Na 2 O: 13%, Al 2 o 3 : 23.9%, TiO 2 : 6%, CaO: 2%, K 2 O: 1%, CoO: 0.1 parts%, NiO: 3%, Fe 2 o 3 : 3%, the enamel glaze is powdery after preparation, add a certain ...

Embodiment 3

[0057] A liquid riser for aluminum liquid, characterized in that the liquid riser comprises a cast iron pipe body, and the inner and outer walls of the cast iron pipe are enamelled with an enamel layer resistant to corrosion by aluminum liquid; the enamel layer Medium enamel quality component contains SiO 2 : 41%, B 2 o 3 : 18%, Na 2 O: 13%, Al 2 o 3 : 13.3%, TiO 2 : 4.5%, CaO: 3%, K 2 O: 3%, CoO: 0.2%, NiO: 2%, Fe 2 o 3 :2%.

[0058] The preparation method of described liquid riser comprises:

[0059] (1) prepare cast iron pipe body;

[0060] (2) Surface treatment of cast iron pipe body: cleaning, shot blasting and shot blasting are performed on the inner and outer surfaces of cast iron pipe in sequence;

[0061] (3) Preparation of enamel glaze: the formula of enamel glaze in terms of mass percentage is: SiO 2 : 41%, B 2 o 3 : 18%, Na 2 O: 13%, Al 2 o 3 : 13.3%, TiO 2 : 4.5%, CaO: 3%, K 2 O: 3%, CoO: 0.2%, NiO: 2%, Fe 2 o 3 : 2%, the enamel glaze is powde...

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Abstract

The invention discloses a liquid lifting pipe for molten aluminum. The pipe comprises a cast iron pipe body and a flange, the flange is arranged at one end of the cast iron pipe body, and the flange and the cast iron pipe body are integrally formed; a filtering net bag is arranged inside the liquid lifting pipe, the front end of the filtering net bag is provided with a clamping part, an annular groove corresponding to the clamping part is formed in the inner wall of the flange, and the surface of the inner wall and the surface of the outer wall of the cast iron pipe body are coated with an enamel glaze layer resistant to corrosion of the molten aluminum in an enameling mode; the enamel glaze in the enamel glaze layer contains the components of, by mass, 40-55% of SiO2, 8-18% of B2O3, 13-18% of Na2O, 10-25% of Al2O3, 3-6% of TiO2, 2-4% of CaO, 1-3% of K2O, 0.1-0.3% of CoO, 1-3% of NiO and 1-3% of Fe2O3. The liquid lifting pipe combines the advantage of corrosion resistance of a ceramicliquid lifting pipe and the advantages of being high in mechanical strength and not prone to breakage of a cast iron liquid lifting pipe.

Description

technical field [0001] The invention relates to the technical field of low-pressure cast aluminum and electrolytic aluminum, in particular to a riser for molten aluminum and a preparation method thereof. Background technique [0002] The riser tube is one of the key components of aluminum alloy low-pressure casting machine and electrolytic aluminum, which directly affects the quality and production efficiency of cast aluminum products. When working, molten aluminum (temperature 660-950°C) is pressed from the riser to the mold cavity every 3-5 minutes. This working condition requires the component to have properties such as high temperature resistance, thermal shock resistance, non-wetting with aluminum solution, good air tightness and long-term thermal shock fatigue resistance. [0003] At present, the riser pipes generally sold on the market have the following materials: ceramic riser pipes and cast iron riser pipes. The ceramic riser has excellent corrosion resistance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/06B22D18/04C03C8/20C03C8/14C03C1/04C23D5/02C23D11/00
CPCC23D5/02C23D11/00C25C3/06C03C1/04C03C8/14C03C8/20B22D18/04
Inventor 周志英
Owner 周志英
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