Tundish impurity removal and flow control device assembly for casting

A tundish and component technology, which is used in casting equipment, casting melt containers, manufacturing tools, etc., can solve the problems of difficult separation and floating, limited ability of inclusion movement trajectory, and low inclusion removal rate, and achieves a simple overall structure. , Improve the probability of collision, good high temperature thermal shock resistance

Active Publication Date: 2021-09-03
WUHAN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the simple structure of the barrage, the ability to change the trajectory of inclusions is limited, and the removal rate of inclusions is not high, especially small-sized inclusions, which basically follow the movement of the molten metal and are difficult to separate and float from the molten metal

Method used

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  • Tundish impurity removal and flow control device assembly for casting
  • Tundish impurity removal and flow control device assembly for casting
  • Tundish impurity removal and flow control device assembly for casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The structure of a casting tundish removal and flow control device assembly 100 provided in this embodiment is as follows: figure 1 As shown, it includes two weirs 3 and two filters 4 vertically arranged in the tundish 1, a turbulence suppressor 2 is arranged at the inner bottom of the tundish 1, and two symmetrical tundish nozzles are opened at both ends of the bottom of the tundish 1 5. A weir 3 and a filter 4 are arranged between the turbulence suppressor 2 and each tundish nozzle 5, the bottom of the weir 3 is provided with an upflow inclined surface 6, and the bottom of the filter 4 is symmetrically provided with two horizontally arranged Semi-circular frustum-shaped discharge hole 7, two tapered holes 8 are provided on the upstream surface of the filter 4, and three circular holes 9 are provided on the backflow surface of the filter 4, and the passage between the tapered holes 8 and the circular holes 9 The circular channel 10 is connected; the surface of the weir...

Embodiment 2

[0036]The structure of a casting tundish removal and flow control device assembly provided in this embodiment is the same as that of Embodiment 1, except that the chemical composition of the weir 3 and the filter 4 is MgO 98wt%, SiO 2 1wt%, ZrO 2 1 wt%, the distance between the vertical center plane of the weir 3 and the vertical center plane of the filter 4 is equal to 800 mm. The distance between the center of the circular hole 9 on the backflow surface of the filter 4 and the free surface of the molten metal is 80mm.

[0037] The weir 3 has a thickness of 90mm.

[0038] The thickness of the filter 4 is 180mm, the diameter of the tangential circle of the conical hole 8 at the end face of the upstream surface is 160mm, the diameter of the tangential circle of the conical hole 8 and the connection end of the circular channel 10 is 60mm, and the two ends of the conical hole 8 are large circles The vertical distance between the small circle and the small circle is 50mm, the ...

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Abstract

The invention discloses a tundish impurity removal and flow control device assembly for casting, and relates to the technical field of metal casting. The tundish impurity removal and flow control device assembly comprises a weir and a filter which are vertically arranged in a tundish, wherein an incident flow inclined surface is arranged at the bottom of the weir; two horizontally arranged semi-circular-truncated-cone-shaped discharge holes are symmetrically formed in the bottom of the filter; two conical holes are formed in the incident flow surface of the filter; three circular holes are formed in the back flow surface of the filter; the conical holes are connected with the circular holes through circular channels; and the surface of the weir, the surface of the filter, the circular holes, the conical holes, the semi-circular-truncated-cone-shaped discharge holes and the wall surfaces of the circular channels are coated with micro-nano-scale oxide functional coatings. The tundish impurity removal and flow control device assembly for casting is resistant to high-temperature thermal impact, high in impurity removal rate and low in cost.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a casting tundish impurity removal and flow control device assembly. Background technique [0002] The cleanliness of molten metal has an important influence on improving the mechanical properties and mechanical properties of metal castings. With the development of my country's economy and society, the performance requirements of castings and subsequent processing products are increasing day by day. It has become the research focus of metallurgists to reduce non-metallic inclusions in molten metal by various means. [0003] The tundish is a refractory container used in the metal casting process. It is used as a buffer container between the refining ladle and the crystallizer. It first receives the molten metal poured from the refining ladle, and then distributes it to each crystallizer through the tundish nozzle. to go. In order to prolong the movement time of the molten ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/00B22D43/00
CPCB22D41/00B22D43/00
Inventor 李光强王强肖爱达谭憧黄奥鄢文陈振文
Owner WUHAN UNIV OF SCI & TECH
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