Casting method of thermal insulation pipeline

A pipeline and heat insulation technology, which is applied to casting molding equipment, casting molds, casting mold components, etc., can solve the problems of difficult preparation methods and harsh preparation conditions, and achieve the effects of shortening casting time, simple preparation methods, and easy acquisition.

Inactive Publication Date: 2017-08-11
HEFEI ZHENXUN LOW TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In summary, the traditional preparation method is difficult and the preparation conditions are relatively harsh, therefore, a better preparation method is needed to improve the deficiencies of the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for casting an insulated pipeline, comprising the following steps:

[0027] 1. Take silicon powder, attapulgite, and cross-linked povidone, stir them well, make them into granules, and dry them at low temperature to obtain mixture 1;

[0028] 2. Take aggregate, heating material, thermal insulation material and binder, and mix for 10 minutes to obtain slurry;

[0029] 3. Fill the mixture 1 and the slurry into the pipe mold with a sand shooting machine for forming and demoulding, and the pipe wall thickness is 10mm;

[0030] 4. Put the pipe material after demoulding into a continuous drying kiln, and dry it for 30 minutes at 380°C at a speed of 2cm / s. After curing and drying, clean the corners of the pipe to obtain the finished product.

[0031] The heat insulating pipeline includes the following raw materials in parts by weight: 50 parts of silicon powder, 60 parts of attapulgite, 50 parts of crospovidone, 30 parts of aggregate, 35 parts of heating material, 50...

Embodiment 2

[0040] A method for casting an insulated pipeline, comprising the following steps:

[0041] 1. Take silicon powder, attapulgite, and cross-linked povidone, stir them well, make them into granules, and dry them at low temperature to obtain mixture 1;

[0042] 2. Take aggregate, heating material, thermal insulation material and binder, and mix for 25 minutes to obtain slurry;

[0043] 3. Fill the mixture 1 and the slurry into the pipe mold with a sand shooting machine for forming and demoulding, and the pipe wall thickness is 10mm;

[0044] 4. Put the pipe material after demoulding into a continuous drying kiln, and dry it at 350°C and 2cm / s for 40 minutes. After curing and drying, clean the corners of the pipe to get the finished product.

[0045] The heat insulating pipe includes the following raw materials in parts by weight: 50 parts of silicon powder, 80 parts of attapulgite, 50 parts of crospovidone, 20 parts of aggregate, 45 parts of heating material, 50 parts of thermal...

Embodiment 3

[0054] A method for casting an insulated pipeline, comprising the following steps:

[0055] 1. Take silicon powder, attapulgite, and cross-linked povidone, stir them well, make them into granules, and dry them at low temperature to obtain mixture 1;

[0056] 2. Take aggregate, heating material, thermal insulation material and binder, and mix for 15 minutes to obtain slurry;

[0057] 3. Fill the mixture 1 and the slurry into the pipe mold with a sand shot machine for forming and demoulding, and the pipe wall thickness is 6mm;

[0058] 4. Put the pipe material after demoulding into a continuous drying kiln, and dry it for 30 minutes at 320°C at a speed of 1cm / s. After curing and drying, clean the corners of the pipe to obtain the finished product.

[0059] The heat insulating pipeline includes the following raw materials in parts by weight: 30 parts of silicon powder, 60 parts of attapulgite, 30 parts of crospovidone, 20 parts of aggregate, 35 parts of heating material, 25 part...

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PUM

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Abstract

The invention provides a casting method of a thermal insulation pipeline. The casting method comprises the following steps: 1, taking and fully mixing silicon powder, attapulgite and crosslinking polyvingypyrrolidone (PVPP) uniformly to obtain a granular material, performing low temperature drying on the granular material to obtain a mixture I; 2, taking aggregate, a heating material, a thermal insulation material and a binder, mixing for 10-25 min to obtain a slurry; 3, filling a pipeline die with the mixture I and the slurry by using a core shooter for forming, and demolding, wherein the pipeline wall thickness is 6-10 mm; 4, placing the pipeline material after forming and demolding into a continuous drying kiln, drying for 30-40 min at the rate of 1-2 cm / s and at the temperature of 320-450 DEG C, solidifying, drying, and clearing the corners of the pipeline, so as to obtain the finished product. According to the casting method of the thermal insulation pipeline, the pipeline casting time is shortened, the pipeline casting temperature is reduced, and the overall thermal insulation effect of the pipeline is obviously improved; besides, the process is simple, complex and dangerous operation steps are avoided, the material cost is low, the production efficiency is high, and the industrial mass production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of pipeline casting, and in particular relates to a casting method of adiabatic pipeline. Background technique [0002] In order to avoid casting defects, some special materials or processes are added to the supplementary part above or on the side of the casting, such as riser materials. The main functions are exhaust, slag removal, and molten steel feeding. , the riser must be required to have good heating and heat preservation effects, and a better heating and heat preservation riser is one of the effective methods to control the quality of castings. [0003] The traditional method of preparing thermally insulated pipes will be composed of various materials such as heating agents, thermal insulation agents, and binders. During the pouring process, due to the chemical reaction of the riser material, the temperature of the molten metal in it will increase, thereby prolonging the temperature of the molten met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C1/22B22C1/18B22C1/02B22C9/02B22C9/24
CPCB22C1/22B22C1/02B22C1/188B22C9/02B22C9/24
Inventor 周青松
Owner HEFEI ZHENXUN LOW TEMPERATURE TECH CO LTD
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