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A heating method and device for raw sand

A heating method and raw sand technology, which are applied in metal processing equipment, machinery for cleaning/processing of casting materials, casting molding equipment, etc., can solve the problem of low temperature of raw sand, avoid excessively low temperature and improve product quality , the effect of increasing the speed of chemical reactions

Active Publication Date: 2017-12-19
CRRC YANGTZE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a heating method and device for raw sand, which solves the technical problem in the prior art that the temperature of the raw sand used for casting is also low due to the low ambient temperature, and realizes the guarantee of product quality, improvement of Technical effects of production efficiency, energy conservation and equipment protection

Method used

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  • A heating method and device for raw sand
  • A heating method and device for raw sand
  • A heating method and device for raw sand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see figure 1 , the heating method for raw sand provided by the embodiment of the present invention includes:

[0049] Step S110: placing the raw sand in the device body;

[0050] Step S120: Detect the external temperature value;

[0051] Step S130: heating the raw sand according to the external temperature value;

[0052] in,

[0053] When the outside temperature is between 0 and 10°C, the temperature of the raw sand in the middle of the device body is 2-4°C higher than that of the rest of the raw sand;

[0054] When the outside temperature is between -10 and 0°C, the temperature of the raw sand in the middle of the device body is 3-5°C higher than that of the rest of the raw sand;

[0055] When the outside temperature is between -20 and -11°C, the temperature of the raw sand in the middle of the device body is 3-6°C higher than that of the rest of the raw sand;

[0056] When the outside temperature is lower than -21°C, the temperature of the raw sand in the middle o...

Embodiment 2

[0065] see figure 2 , the heating device for raw sand provided by the embodiment of the present invention, the device corresponds to the above method, including: a device body and a heating mechanism; the heating mechanism is arranged in the device body; when the raw sand 6 enters the device body, the heating mechanism according to The external temperature value heats the raw sand 6 respectively.

[0066] in,

[0067] When the external temperature is between 0 and 10°C, the temperature of the raw sand in the middle of the device body is 2-4°C higher than that of the rest of the raw sand;

[0068] When the external temperature is between -10 and 0°C, the temperature of the raw sand in the middle of the device body is 3-5°C higher than that of the rest of the raw sand;

[0069] When the outside temperature is between -20 and -11°C, the temperature of the raw sand in the middle of the device body is 3-6°C higher than that of the rest of the raw sand;

[0070] When the externa...

Embodiment 3

[0081] see image 3 , when the heating device provided by the embodiment of the present invention is in use, the raw sand 6 is added to the sand bucket 1; the raw sand 6 passes through the sand adding section 2 and reaches the heating section 3. The raw sand 6 passes through the heating pipe 7 from top to bottom due to its own weight, and the heating pipe 7 heats the raw sand 6 at each position in the device body respectively. The heated raw sand 6 falls to the storage section 4 again, and can be output from the storage section 4 to enter the next process. Wherein, by adjusting the heating temperature and the discharge flow rate of the raw sand 6, the temperature of the discharged raw sand 6 reaches the target temperature. What needs to be explained here is that multiple temperature measuring points are set in the storage section 4 to monitor the sand temperature in good time, and the temperature of the heating wire 8 can be adjusted according to the sand temperature so as to...

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Abstract

The invention discloses a heating method and device for raw sand. The method includes the steps that the raw sand is put into a device body; the external temperature value is detected; and according to the external temperature value, the raw sand is heated. According to the external temperature value, the raw sand in the device body is heated through a heating mechanism, the influences caused by the lower environment temperature on the raw sand used for casting are reduced, and the temperature of the raw sand is prevented from being too low. On one hand, the chemical reaction speed of a bonding agent is increased, it is guaranteed that the bonding agent can react completely, the bonding degree of the raw sand and the bonding agent is greatly increased, it is effectively guaranteed that the quality of a sand core / sand model reaches the standard, the product quality is improved, the manufacturing time of the sand core / sand model is prevented from being prolonged, the production efficiency is improved, and energy is saved; and on the other hand, the raw sand is prevented from being agglomerated, and a production line or related equipment is protected.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a heating method and device for raw sand. Background technique [0002] my country is a big industrial manufacturing country, and the foundry industry is the basic industry of industrial manufacturing. According to statistics, most of the castings in our country are produced by sand casting, and raw sand is more or less used in the production of castings. Affected by climatic conditions in the north and south of my country, there will always be several months of low temperature every year. The lower ambient temperature will often make the temperature of the raw sand used for casting lower. The low temperature raw sand will bring the following to the production of castings. Several aspects of influence: [0003] 1. Product quality is difficult to guarantee. The shape of the casting is determined by the sand core / sand mold, and the sand core / sand mold is formed by adding raw sand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C5/00
Inventor 何氢玲宋仲明苟春林焦辉王连华江锐锋武永亮熊火顺旷丹峰
Owner CRRC YANGTZE CO LTD
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