Metal ceramic composite riser tube and preparation method thereof

A metal-ceramic composite and riser technology, applied in the direction of inorganic adhesives, adhesives, etc., to achieve the effects of easy and rapid preparation, reduced use costs, and reduced labor intensity

Inactive Publication Date: 2021-03-26
XIAN CHAOMA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal-ceramic composite riser is composed of a metal flange on the outer ring of the ceramic riser, through the adhesive layer arranged between the two, the matching connection between the boss and the groove, and the bolted connection between the metal flanges , improve the tightness and airtightness of the connection between the ceramic riser and the metal flange, ensure the load bearing of the molten aluminum, and overcome the traditional riser that is easy to corrode at high temperature and cause the molten aluminum to increase iron Pollution problem, long-term thermal shock fatigue resistance, suitable for high-efficiency low-pressure casting of aluminum alloys

Method used

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  • Metal ceramic composite riser tube and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0033]Such asfigure 1 As shown, the metal ceramic composite lifting tube of the present invention includes a ceramic lifting tube 1 and a ring sleeve in the outer surface of the ceramic lifting tube 1, the outer surface of the ceramic lifting tube 1 and the inner surface of the metal flange. There is a bonding layer 2 between the upper surface of the ceramic lifting tube 1, which includes a boss 4, which includes a metal flange 8 and a metal lower flange. 3, and the metal upper flange 8 and the metal lower flange 3 are provided with an elastic feeding pad 6, and the upper end of the inner surface of the metal lower flange 3 is opened, and the groove 5 is connected to the boss 4. The upper surface of the boss 4 is open to the outer surface joint of the ceramic lifting tube 1 with a reverse airflow passage 9.

[0034]The metal ceramic composite lifting tube of the present invention includes a ceramic lifting tube 1 and a metal flange outside the ceramic lifting tube 1, first passing betw...

Embodiment 2

[0043]The preparation method of the metal ceramic composite rising liquid pipe includes the following steps:

[0044]Step 1, the ceramic lifting tube 1, the metal upper flange 8 and the metal lower flange 3 are cleaned;

[0045]Step 2, apply the adhesive to the outer surface of the ceramic lifting tube 1 after the surface cleaner in the step, and the inner surface of the flange 8 and the metal lower flange 3 after the surface is cleaned; The preparation method of the latter is: the mass concentration of 85%, the distilled water is well mixed with aluminum hydroxide, and then stirred at 70 ° C for 3 h, then adding alumina and magnesium oxide to continue stirring for 2 h, mix well, cooled The mass content of 85% by mass concentration of 85% in the adhesive is 39%, and the mass content of distilled water is 38%, and the mass content of aluminum hydroxide is 14%, and the mass content of alumina is 6%. The mass content of magnesium oxide is 0.3%;

[0046]Step three, the ceramic lifting tube 1 of ...

Embodiment 3

[0049]The present embodiment differs from the first embodiment in the preparation method of the adhesive: the phosphoric acid solution of 85% by mass, the distilled water is well mixed with aluminum hydroxide, and then stirred at 80 ° C for 2 h, then add alumina And the magnesium oxide continued for 2 h, mixed uniform, cooled to obtain an adhesive, the mass concentration of 85% of the mass concentration of 85% was 37%, and the mass content of distilled water was 42%, and the mass content of aluminum hydroxide. It was 13.5%, and the quality of alumina was 7%, and the mass content of magnesium oxide was 0.5%.

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Abstract

The invention provides a metal ceramic composite riser tube. The metal ceramic composite riser tube comprises a ceramic riser tube body and a metal flange annularly sleeving the ceramic riser tube body, a bonding layer is arranged between the ceramic riser tube body and the metal flange, a boss is annularly arranged on the upper side surface of the ceramic riser tube body, the metal flange comprises an upper metal flange body and a lower metal flange body which are fixedly connected through bolts, an elastic sealing gasket is arranged between the upper metal flange body and the lower metal flange body, a groove is formed in the upper end of the inner surface of the lower metal flange body, the groove is connected with the boss in a matched mode, and a reverse airflow channel is formed in the joint of the upper surface of the boss and the outer surface of the ceramic riser tube body. The invention further provides a preparation method of the metal ceramic composite riser tube. Through arrangement of the bonding layer, the matched connection of the boss and the groove and the fixed connection of the bolts, the connection tightness and the air tightness between the ceramic riser tubebody and the metal flange are improved, and the problem that molten aluminum increases iron and causes pollution due to the fact that the riser tube is easy to corrode at a high temperature is solved;and the preparation process is simple and rapid.

Description

Technical field[0001]The present invention belongs to the technical field of metallurgical equipment, and more particularly to a metal ceramic composite lifting tube and a preparation method thereof.Background technique[0002]Lifting tubes are one of the key components of the car's cylinder and the wheel and other aluminum alloy low pressure casting machines. At the lower end, the lower end is placed in the thermal insulation furnace (temperature 700 ~ 800 ° C), and the upper end is connected to the low-pressure casting die, the molten aluminum liquid is rising along the liter of the lifting tube into the mold cavity. Casting, casting automation and continuous. As a pipe for pressing high-temperature aluminum alloy liquid, the lifting tube material is required not only high temperature (800 ° C), aluminum liquid flushing and corrosion, no contamination of aluminum alloy and good air tightness, and has long-term thermal shock fatigue Sex. Therefore, the aluminum alloy low pressure cas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04C09J1/00
CPCB22D18/04C09J1/00
Inventor 杨万利韩婷李婷程皓冯婧张旭辉康媛媛史佳兴
Owner XIAN CHAOMA SCI TECH
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