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Lubricant for semi-continuous casting brass and preparation method thereof

A technology of casting brass and lubricants, which is applied in the direction of casting molding equipment, molds, mold components, etc., can solve problems such as hole defects, and achieve the effects of reducing surface tension, avoiding grinding, and changing the lubricating effect

Active Publication Date: 2017-08-08
安徽鑫科铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a lubricant for semi-continuous casting of brass, which avoids hole defects caused by using a single borax

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A lubricant for semi-continuous casting of brass, which consists of the following materials and parts by weight: 75 parts of dehydrated borax and 25 parts of dehydrated industrial salt.

[0020] The preparation method of above-mentioned semi-continuous casting brass lubricant is:

[0021] (a) Put 500kg of borax into an iron drum and put it into a well-type resistance furnace to heat up to 500°C, keep it warm and bake for 2 hours, continue to bake for 2 hours after power off, and take it out when the furnace temperature drops to 30°C to obtain dehydrated Borax, use a pulverizer to crush it into a powder with a particle diameter of 0.1 to 0.15 mm to obtain dehydrated borax powder;

[0022] (b) Put 100kg of industrial salt into an iron drum and put it into a well-type furnace to raise the temperature to 300°C, keep it warm and bake for 2 hours, continue to bake for 2 hours after the power is turned off, and take it out when the furnace temperature drops to 30°C to obtain d...

Embodiment 2

[0026] A lubricant for semi-continuous casting of brass, which consists of the following materials and parts by weight: 82 parts of dehydrated borax and 18 parts of dehydrated industrial salt.

[0027] The preparation method of above-mentioned semi-continuous casting brass lubricant is:

[0028] (a) Put 500kg of borax into an iron drum and put it into a well-type resistance furnace to raise the temperature to 600°C, keep it warm and bake for 1 hour, continue to bake for 4 hours after the power is turned off, and take it out when the furnace temperature drops to 50°C to obtain dehydrated Borax, use a pulverizer to crush it into a powder with a particle diameter of 0.1 to 0.15 mm to obtain dehydrated borax powder;

[0029] (b) Put 100kg of industrial salt into an iron drum and put it into a well-type furnace to heat up to 350°C, heat it up and bake for 1 hour, continue to bake for 4 hours after the power is turned off, and take it out when the furnace temperature drops to 50°C t...

Embodiment 3

[0033] A lubricant for semi-continuous casting of brass, which consists of the following materials and parts by weight: 88 parts of dehydrated borax and 12 parts of dehydrated industrial salt.

[0034] The preparation method of above-mentioned semi-continuous casting brass lubricant is:

[0035] (a) Put 500kg of borax into an iron drum and put it into a well-type resistance furnace to raise the temperature to 550°C, heat and bake for 1.5 hours, continue to bake for 6 hours after power off, and take it out when the furnace temperature drops to 80°C to obtain dehydrated Borax, use a pulverizer to crush it into a powder with a particle diameter of 0.1 to 0.15 mm to obtain dehydrated borax powder;

[0036] (b) Put 100kg of industrial salt into an iron drum and put it into a well-type furnace to heat up to 320°C, keep it warm and bake for 1.5 hours, continue to bake for 6 hours after the power is turned off, and take it out when the furnace temperature drops to 80°C to obtain dehyd...

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Abstract

The invention discloses a lubricant for semi-continuous casting brass and a preparation method thereof. The lubricant uses 75-95 parts by weight of dehydrated borax and 5-25 parts by weight of dehydrated industrial salt as raw materials, and can be uniformly mixed. The lubricant for semi-continuous casting brass is prepared. The lubricant prepared by this method can reduce the viscosity of the melt and reduce the surface tension of the liquid borax due to the good surface activity of the Na ions in the industrial salt. , so as to reduce the inclusion of borax, so that borax will not be entrained in the solidification process of the copper liquid, thus effectively avoiding the appearance of holes.

Description

technical field [0001] The invention relates to the field of preparation of a lubricant for semi-continuous casting of brass, in particular to a lubricant for semi-continuous casting of brass using borax and industrial salt as raw materials and a preparation method thereof. Background technique [0002] At present, domestic semi-continuous casting brass uses borax as a lubricant. The main function of borax is: dehydrated borax is added to the copper liquid in the crystallizer, and it becomes molten and covers the copper liquid surface, preventing direct contact between high-temperature copper liquid and air. , to avoid slag inclusions caused by oxidation of the melt, and ensure casting quality; molten borax forms a lubricating layer between the ingot and the inner wall of the crystallizer, which reduces the casting resistance, avoids the cracking of the ingot shell, and reduces the cooling of the ingot surface. The defects of gaps and unevenness improve the surface quality o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/07B22C3/00
Inventor 叶东皇候俊罗继华付真荣
Owner 安徽鑫科铜业有限公司
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