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Ultrathin aluminum-based steel flowing tank

An ultra-thin, first-class steel technology, applied in the direction of core, mold, mold composition, etc., can solve the problems that the surface layer is easy to be peeled off, reduce the working efficiency of the smelting process, and affect the quality, so as to improve the purity and process Stability, the possibility of eliminating alloy contamination, and the effect of improving the pass rate and service life

Active Publication Date: 2019-11-22
SHENYANG HENGTAI XINYUAN PRECISION CASTING REFRACTORY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the alloy smelting is completed in the vacuum induction furnace, when pouring, due to the violent rolling and mixing of steel slag in the smelting furnace, direct pouring cannot meet the requirements for the purity of molten steel. At the same time, due to the limitation of equipment space, the molten steel must be poured first. The inflow steel tank, after standing and filtering, is injected into the ingot mold
[0003] The flow steel channel plays the role of transporting the alloy solution in both the ordinary metal smelting process and the vacuum smelting process; the traditional flow steel channel is mainly composed of clay or other refractory materials, and is manufactured by a one-time molding process. The traditional flow steel In the early stage of manufacturing, the grooves have great defects: large internal stress, mold clamping seam, weak structure, etc.; the traditional flow steel grooves are prone to cracking under the influence of high temperature during use, and the surface layer is easily peeled off, leaving metal residues on the inner wall It is not easy to clean, and the metal (mainly superalloy) is likely to be polluted during the smelting process during the process of slipping the metal solution; in addition, due to the single structure of the traditional laundering channel, it is formed by a single casting mold, and its quality is poor and the degree of high temperature resistance is relatively low. Low, thus affecting the quality of metals produced by smelting (mainly precious metals such as superalloys, etc.) in practical applications;
[0007] However, since the above-mentioned flow steel channel is prepared by one-shot molding, its overall structure cannot be disassembled, and its volume is relatively complicated. When the product cracks, if it can be repaired, the repair material is added later, and the combination with the channel body is not tight. , under the scouring of the alloy solution, it is easy to fall off and cause pollution risks, which affects the quality of molten steel; if it cannot be repaired, the whole flow steel channel needs to be replaced, which not only consumes a lot of raw materials, but also causes waste, and the cleaning work before the use of new products It also takes a long time, and it takes more manpower and material resources to replace a set of flow steel channels, which greatly reduces the work efficiency of the smelting process

Method used

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  • Ultrathin aluminum-based steel flowing tank
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  • Ultrathin aluminum-based steel flowing tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] An ultra-thin aluminum-based flow channel, the channel body is a segmented structure, including a connecting steel channel 1, a first flow steel channel 2, a second flow steel channel 3 and a steel tapping channel 4 connected in sequence. 45° / 135° smooth surface connection; the tank body has a layered structure from the inner wall to the outside, specifically, such as Figure 8 The layered structure shown, from the inner wall of the tank to the outside, is the refractory layer 6, the transition layer 5, the second reinforcement layer 4, the metal mesh 1, the first reinforcement layer 2 and the protective layer 3. The above layered structures are all coated with The refractory layer 6, the transition layer 5, the reinforcement layer and the protective layer 3 are all refractory materials, and the refractory layer 6 is made of spherical and flake white corundum materials; the transition layer 5 and the protective layer 3 are all made of oxide refractory Material, the rein...

Embodiment 2

[0052] An ultra-thin aluminum-based flow channel, the channel body is a segmented structure, including a connecting steel channel 1, a first flow steel channel 2, a second flow steel channel 3 and a steel tapping channel 4 connected in sequence. Such as Figure 6 The buckle method shown is connected; the tank body is a layered structure from the inner wall to the outside, specifically, as Figure 8 The layered structure shown, from the inside to the outside, is the refractory layer 6, the transition layer 5, the second reinforcement layer 4, the metal mesh 1, the first reinforcement layer 2 and the protective layer 3, and the above layered structures are all made of coated The refractory layer 6, the transition layer 5, the reinforcement layer and the protective layer 3 are all refractory materials, and the refractory layer 6 is made of spherical and flake white corundum materials; the transition layer 5 and the protective layer 3 are all made of oxide refractory materials, T...

Embodiment 3

[0058] Utilize the ultra-thin aluminum-based flow steel channel product produced in this embodiment 1 and comparative example 1 to carry out pouring experiment:

[0059] Pouring volume: 4,000 kg cobalt-chromium-nickel-based superalloy molten steel

[0060] Pouring temperature: 1450~1570℃, pouring time: 20min

[0061] Process:

[0062] 1) Preheat the flow steel channel assembly for 8 to 10 hours, the preheating temperature is ≥1000°C, and then follow the figure 1 Assembled flow channel shown;

[0063] 2) Pour 4,000 kg of cobalt-chromium-nickel-based superalloy liquid into the assembled ladle, and send it to the pouring process through the ladle.

[0064] Experimental results: Through observation, it is found that in the one-time process from use to end, the flow steel channel product of Example 1 has no cracking, erosion resistance, no peeling, chipping and slag phenomenon, and the slag blocking effect in the first flow steel channel area Very good, it can effectively impro...

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Abstract

The invention relates to the field of alloy smelting facilities and provides an ultrathin aluminum-based steel flowing tank. The wall thickness of a tank body of the steel flowing tank is 12-25 mm, and the tank body of the steel flowing tank is of a segmental structure and comprises a steel receiving tank, a first steel flowing tank, a second steel flowing tank and a tapping tank connected successively. The tank body of the steel flowing tank is lighter and thinner. As the wall thickness and the weight are reduced greatly, the production and application costs are lowered. A connecting mode between the tank body assemblies is also changed, so that the tank body assemblies are more easily replaced. Therefore, the risk that a repair material pollutes an alloy solution is reduced fundamentally.

Description

technical field [0001] The invention relates to alloy smelting facilities, in particular to an ultra-thin aluminum-based ladle. Background technique [0002] After the alloy smelting is completed in the vacuum induction furnace, when pouring, due to the violent rolling and mixing of steel slag in the smelting furnace, direct pouring cannot meet the requirements for the purity of molten steel. At the same time, due to the limitation of equipment space, the molten steel must be poured first. The inflow steel tank, after standing and filtering, is injected into the ingot mould. [0003] The flow steel channel plays the role of transporting the alloy solution in both the ordinary metal smelting process and the vacuum smelting process; the traditional flow steel channel is mainly composed of clay or other refractory materials, and is manufactured by a one-time molding process. The traditional flow steel In the initial stage of manufacturing, the grooves have great defects: large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00
CPCB22D1/00B22D11/103B22D1/007B22D35/04B22C9/086B22D43/004B22D43/001C22B5/02
Inventor 万旭杰滕华楠
Owner SHENYANG HENGTAI XINYUAN PRECISION CASTING REFRACTORY MATERIAL CO LTD
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