A kind of gradient three-dimensional through hole ventilation plug and preparation method thereof

A technology for venting plugs and through-holes, applied in the field of gradient three-dimensional through-hole venting plugs and its preparation, which can solve problems such as easy air leakage, reduced air flow, and reduced service life of venting plugs

Active Publication Date: 2021-06-15
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the particle size and uniformity of the bubbles of the composite diffused venting plug are higher than those of the separate diffused venting plug and slit venting plug, if the air volume is adjusted, the diffuse structure and the slit structure are prone to air leakage at the interface. Thereby reducing the service life of the vent plug
[0005] "A preparation method for a slit-type venting plug" (CN201310580577.X) patented technology, by applying a lubricant on the surface of the slit filler, the slit filler of the venting plug can be drawn out without destroying the structure of the green body of the venting plug , to solve the problem of insufficient air flow of the finished venting plug caused by the residue of the slit filler after burning
This preparation method can increase the air permeability of the vent plug by an average of 10% under other equivalent preparation conditions, but the slit is also easily invaded by molten steel to form a steel clamp, which reduces the air permeability

Method used

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  • A kind of gradient three-dimensional through hole ventilation plug and preparation method thereof
  • A kind of gradient three-dimensional through hole ventilation plug and preparation method thereof
  • A kind of gradient three-dimensional through hole ventilation plug and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A gradual three-dimensional through-hole ventilation plug and a preparation method thereof. The preparation method described in this embodiment is:

[0059] Construct a three-dimensional hole skeleton geometric model, in which the parameters are as follows:

[0060] a=H / n 1 (1)

[0061] d=k×a (2)

[0062] no 2 = 2r 上 / a (3)

[0063] no 3 = 2r 中 / a (4)

[0064] no 4 = 2r 下 / a (5)

[0065] In the formulas (1) to (5): a represents the side length of a single cell in the geometric model of the three-dimensional hole skeleton, mm;

[0066] H represents the height of the vent plug, mm;

[0067] no 1 Indicates the number of layers of a single cell in the three-dimensional hole skeleton geometric model;

[0068] d represents the diameter of a single cell in the three-dimensional hole skeleton geometric model, mm;

[0069] k represents the scale factor of a single cell in the three-dimensional hole skeleton geometric model;

[0070] no 2 Indicates the number o...

Embodiment 2

[0085] A gradual three-dimensional through-hole ventilation plug and a preparation method thereof. The preparation method described in this embodiment is:

[0086] Construct a three-dimensional hole skeleton geometric model, in which the parameters are as follows:

[0087] a=H / n 1 (1)

[0088] d=k×a (2)

[0089] no 2 = 2r 上 / a (3)

[0090] no 3 = 2r 中 / a (4)

[0091] no 4 = 2r 下 / a (5)

[0092] In the formulas (1) to (5): a represents the side length of a single cell in the geometric model of the three-dimensional hole skeleton, mm;

[0093] H represents the height of the vent plug, mm;

[0094] no 1 Indicates the number of layers of a single cell in the three-dimensional hole skeleton geometric model;

[0095] d represents the diameter of a single cell in the three-dimensional hole skeleton geometric model, mm;

[0096] k represents the scale factor of a single cell in the three-dimensional hole skeleton geometric model;

[0097] no 2 Indicates the number o...

Embodiment 3

[0111]A gradual three-dimensional through-hole ventilation plug and a preparation method thereof. The preparation method described in this embodiment is:

[0112] Construct a three-dimensional hole skeleton geometric model, in which the parameters are as follows:

[0113] a=H / n 1 (1)

[0114] d=k×a (2)

[0115] no 2 = 2r 上 / a (3)

[0116] no 3 = 2r 中 / a (4)

[0117] no 4 = 2r 下 / a (5)

[0118] In the formulas (1) to (5): a represents the side length of a single cell in the geometric model of the three-dimensional hole skeleton, mm;

[0119] H represents the height of the vent plug, mm;

[0120] no 1 Indicates the number of layers of a single cell in the three-dimensional hole skeleton geometric model;

[0121] d represents the diameter of a single cell in the three-dimensional hole skeleton geometric model, mm;

[0122] k represents the scale factor of a single cell in the three-dimensional hole skeleton geometric model;

[0123] no 2 Indicates the number of...

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Abstract

The invention relates to a gradually changing three-dimensional through-hole ventilation plug and a preparation method thereof. The technical solution is: import the constructed three-dimensional hole skeleton geometric model into a 3D printer, print with 3D printing paste, and obtain a porous template. The porous template is fixed on the bottom of the venting plug mold, and then the venting plug slurry is poured into the venting plug mold, cured for 24 hours at a temperature of 15-35° C. and a humidity of 75-90%, and then demolded and dried. Under the condition of 1-100Pa, raise the temperature to 600-800°C at a rate of 0.5-3°C / min, and keep it for 1-3h; After cooling down to room temperature in the furnace, a gradually changing three-dimensional through-hole venting plug is prepared. The invention has the advantages of large air flow, high overall strength, good stirring effect, high blowing rate, not easy to clamp steel and high efficiency of cleaning molten steel. Small.

Description

technical field [0001] The invention belongs to the technical field of ventilation plugs. In particular, it relates to a gradual three-dimensional through-hole ventilation plug and a preparation method thereof. Background technique [0002] At present, there are mainly two structural forms of high-performance venting plugs: diffuse type and slit type. Dispersed venting plug is the earliest form of venting plug. A large number of irregularly distributed pores are produced by controlling the particle size ratio of ingredients and forming by hydraulic press. The advantage of this kind of vent plug is that the manufacturing process is simple and easy to produce; due to the special structure of the diffusion hole, the problem of steel clamping in the slit of the slit vent plug is avoided, and absolute ventilation can be guaranteed; at the same time, the bubbles generated are small, numerous and uniform, Bottom blowing and stirring effect is good. The disadvantage is that it ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00B29C64/00C04B35/101C04B35/63C04B38/00F16K24/00
Inventor 李亚伟潘丽萍贺铸梁雄吴畏虎王庆虎谭方关
Owner WUHAN UNIV OF SCI & TECH
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