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Equipment for nonvacuum melting and casting readily oxidizable metal and alloy

A non-vacuum smelting technology for easily oxidized metals, which is applied in the smelting and casting equipment of easily oxidized metals and alloys, and in the field of equipment combining smelting and continuous casting of easily oxidized metals and alloys under non-vacuum conditions. Issues such as discontinuity and limiting industrialization prospects

Inactive Publication Date: 2007-03-07
苏州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Vacuum smelting and ingot casting methods have the following problems: ① Due to the high vacuum degree required in the smelting process of the vacuum furnace, the requirements for the sealing of the furnace body are very high, and composition measurement, composition adjustment and slag removal cannot be performed during smelting Therefore, the requirements for the composition and impurity content of raw materials are very high; ②Pig iron mold ingots are generally used in vacuum furnaces instead of water cooling. ③ Vacuum furnace smelting and ingot mold casting are both discontinuous operations, so that they can only be produced on a small scale, and cannot be used for continuous large-scale production, which limits their industrialization prospects

Method used

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  • Equipment for nonvacuum melting and casting readily oxidizable metal and alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Take the raw materials electrolytic copper, copper-chromium intermediate alloy and zinc respectively, and the amount of materials taken is shown in Table 1, and put into the furnace 5 from the feeding port 4, so that it is filled in the middle of the crucible 8, and the furnace cover 3 can also be opened to directly add the raw materials; cover the cover and Observe the window 2, open the protective gas valve, and pass argon gas from the upper air inlet 1 until the air is discharged from the upper feeding port 4, the protective gas is filled with the furnace 5, and the match will be extinguished immediately when the match is lit at the upper feeding port 4. Turn on the induction heating device 6 to heat the induction furnace body, the power is 10KW, the time is 10 minutes, the power adjustment is 50KW, and it is heated to melting. The whole heating process can be observed through the observation window 2. Add copper clad zirconium and magnesium from feeding port 4, and s...

Embodiment 2

[0023] Using electrolytic copper and titanium sponge as raw materials, the present invention is carried out under the same conditions as in Example 1. The chemical contents of raw materials and ingots are shown in Table 2. The loss rates of each metal during the smelting process are: Cu: ≤1.0%, Ti: 3.4%. The surface of the ingot is smooth, without cracks, with few internal pores and inclusions, and the grain size of the ingot is about 0.1um.

[0024] raw material

[0025] The above examples show that the present invention adopts non-vacuum method to smelt and semi-continuously cast easily oxidizable metals and alloys in a protective gas atmosphere. In the protective gas layer, the partial pressure of oxygen and hydrogen is very small, which accelerates the melting process Diffusion of oxygen and hydrogen in the middle, the density of oxygen and hydrogen is small, it floats up to the upper gas outlet of the furnace and is discharged in time, and the effect of deoxygen...

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Abstract

The invention relates to a device used in non-vacuum smelt casting oxidizable metal and alloy. Wherein, the furnace has heater and pot; the furnace cover has gas inlet and material inlet; and it has cooler; the bottom of furnace has lower irrigator; the bottom of pot has bottom bowl; the irrigator of bottom bowl contacts the plug rod vertically; the bottom plug rod is connected to the dummy ingot head; the dummy ingot head adjusts the position of plug rod; the bottom bowl is connected to crystallizer connected to the cooler; the crystallizer has graphite sheath and cooling water groove, to reduce the casting ingot temperature; the dummy ingot head has dovetail groove to solidify the fusion as drawing function; the dummy ingot head is connected to adjuster. The invention processes the whole process under protective gas, with low hurt rate and improved quality.

Description

technical field [0001] The invention relates to smelting and casting equipment for easily oxidized metals and alloys, in particular to equipment combining smelting and continuous casting for easily oxidized metals and alloys under non-vacuum conditions, and belongs to the technical field of non-ferrous metal processing. Background technique [0002] Vacuum melting and ingot casting (discontinuous ingot casting) are generally used for easily oxidized metals and alloys. The main process is: firstly mix the alloy elements in proportion, put them into the vacuum furnace, and put the mold into the vacuum furnace at the same time. Vacuum to 10 -3 The heating and smelting starts below the Pa, and the casting is directly carried out in a vacuum furnace after the smelting is completed. This smelting and casting method, due to the high vacuum in the furnace, the gas partial pressure of oxygen is extremely low, which kinetically prevents the oxidation and burning of the molten metal. ...

Claims

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Application Information

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IPC IPC(8): B22D11/14B22D21/02C22C1/02
Inventor 慕思国向朝建郭富安张跃杰曹兴民杨春秀汤玉琼
Owner 苏州有色金属研究院有限公司
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