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Preparation method of single-phase non-magnetic corrosion-resistant electrolytic aluminum crust breaking hammer and product thereof

A technology of shelling hammer and electrolytic aluminum, applied in the field of material forming, can solve the problems of high cost and poor pertinence of hammer loss, and achieve the effects of low production cost, ensuring the purity of primary aluminum, and reducing resistance

Pending Publication Date: 2022-04-22
阜新祥远铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a lot of work has been done on the installation, maintenance, control and disassembly of the hammer head, but this cannot fundamentally solve the corrosion loss problem of the hammer head; some studies have also been done on the improvement of the material of the hammer head, but the cost is relatively high , In addition, the nature of the hammer head loss is not very targeted

Method used

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  • Preparation method of single-phase non-magnetic corrosion-resistant electrolytic aluminum crust breaking hammer and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) The lost foam casting method is used to make the lost model cavity according to the standard size of the hammer head (the raw materials are expandable polystyrene resin beads EPS, expandable methyl methacrylate and styrene copolymer resin beads The combination of STMMA and expandable polymethyl methacrylate resin beads EPMMA, the mass ratio is 1:1:1), the upper hollow structure of the vanishing model cavity accounts for 45% of the total volume of the upper part, and it is carried out under an argon atmosphere Carbonization treatment, the temperature is 1300°C, and the time is 2 hours; accurately weigh the mass of the disappearing model cavity, weigh its mass after carbonization treatment, and calculate the amount of residual carbon;

[0041] (2) The composition of austenitic stainless steel is calculated according to the mass fraction: C: 0.08% (the amount of C added needs to subtract the residual carbon in the disappearing model cavity), Si: 0.08%, Cr: 19.00%, Mn: 1...

Embodiment 2

[0044] (1) Using the method of lost foam casting, according to the standard size of the hammer head, make the lost model cavity (the raw material is expandable polystyrene resin beads EPS), and the upper hollow structure of the lost model cavity accounts for 42% of the total volume of the upper part. %, carry out carbonization treatment under an argon atmosphere, the temperature is 1200 ° C, and the time is 3 hours; accurately weigh the mass of the disappearing model cavity, weigh its mass after carbonization treatment, and calculate the amount of residual carbon;

[0045] (2) The composition of austenitic stainless steel is calculated according to the mass fraction: C: 0.05% (the amount of C added needs to subtract the residual carbon in the disappearing model cavity), Si: 0.07%, Cr: 18.50%, Mn: 1.58% , Ni: 8.76%, P: 0.04%, S: 0.02%, and the remaining content is pure iron powder; the austenitic stainless steel components are melted and mixed to obtain austenitic stainless stee...

Embodiment 3

[0048] (1) The lost foam casting method is used to make the lost model cavity according to the standard size of the hammer head (the raw materials are expandable methyl methacrylate and styrene copolymer resin beads STMMA and expandable polymethyl methacrylate Resin beads EPMMA, the mass ratio is 1:1), the upper hollow structure of the disappearance model cavity accounts for 47% of the total volume of the upper part, carbonization treatment is carried out under an argon atmosphere, the temperature is 1450 ° C, and the time is 1 h; accurate weighing The mass of the disappearing model cavity is weighed after carbonization treatment, and the residual carbon amount is calculated;

[0049] (2) The composition of austenitic stainless steel is calculated according to the mass fraction: C: 0.06% (the amount of C added needs to subtract the residual carbon in the disappearing model cavity), Si: 0.50%, Cr: 19.50%, Mn: 1.56% , Ni: 10.00%, P: 0.03%, S: 0.03%, and the remaining content is ...

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Abstract

The invention discloses a preparation method of a single-phase non-magnetic corrosion-resistant electrolytic aluminum crust breaking hammer and a product of the single-phase non-magnetic corrosion-resistant electrolytic aluminum crust breaking hammer, and belongs to the technical field of material forming. The method for preparing the electrolytic aluminum crust breaking hammer head by adopting a double-liquid casting method specifically comprises the following steps: manufacturing a lost foam cavity, carrying out carbonization treatment, and measuring the residual carbon amount; austenitic stainless steel components are molten and mixed, and Q235 steel is molten; and the molten austenitic stainless steel liquid and the molten Q235 steel liquid are guided into a lost foam cavity, and the single-phase non-magnetic corrosion-resistant electrolytic aluminum crust breaking hammer is obtained after cooling. The production process is simple, the double-liquid interface bonding property is good, the molten aluminum corrosion resistance is high, the production cost is low, heat generated by electromagnetic induction is little, heat generated by resistance is small, and the purity of primary aluminum is guaranteed through small hammer head loss. The service life of the electrolytic aluminum crust breaking hammer head prepared by the method is 24-26 months, the production efficiency is improved, and the electrolytic aluminum cost is reduced.

Description

technical field [0001] The invention relates to the technical field of material forming, in particular to a preparation method of a single-phase non-magnetic and corrosion-resistant electrolytic aluminum shelling hammer and a product thereof. Background technique [0002] Electrolytic aluminum is aluminum obtained by electrolysis. The modern electrolytic aluminum industry uses cryolite-alumina molten salt electrolysis. Molten cryolite is the solvent, alumina is used as the solute, and carbonaceous body is used as the cathode and anode. After a strong direct current is applied, the electrochemical reaction is carried out on the two poles in the electrolytic cell at 950 ° C to 970 ° C, that is, electrolysis. During the electrolysis process, the surface of the electrolyte is easy to solidify into a shell due to the low temperature, which affects the process of feeding and aluminum extraction. During the process of feeding and aluminum extraction, the surface electrolyte shell n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D19/16C22C38/02C22C38/04C22C38/58C22C38/40C25C3/14
CPCB22D19/16C22C38/02C22C38/04C22C38/58C22C38/40C25C3/14Y02P10/20
Inventor 王国强张艳华王雷董伟赵美娜
Owner 阜新祥远铸造有限公司
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