Method for coating cement lining on pipe fitting

A cement lining and lining technology, which is applied to prefabricated components, ceramic molding machines, manufacturing tools, etc., can solve the problems of insufficient cement layer density, water cannot be discharged, and affect adhesion, so as to shorten the production cycle and improve Strength and the effect of improving productivity

Inactive Publication Date: 2011-07-06
桃江新兴管件有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high water content, when the lining is applied manually, the water in the mortar cannot be discharged, resulting in pores between the pipe wall and the cement layer that affect the adhesion, and at the same time, the density of the cement layer is not enough to affect the strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for lining cement linings of pipe fittings, comprising the following steps:

[0017] (1) Material preparation: Put the river sand into an 80-mesh iron sieve for sieving, and the fine sand after sieving is ready for use; the cement is 425# or the cement required by the user; prepare 801 glue, and weigh a polyvinyl alcohol dry material Put part into a container, then add water in a ratio of 1:30, heat until the dry material is completely dissolved and set aside;

[0018] (2) Mixing material: by weight, by fine sand: cement: 801 glue is 2: (1-1.5): (0.1-0.15) retrieving (the present embodiment is 2: 1.2: 0.15), first river sand 1. Put the cement into the mixer to make it mix evenly, then add 801 glue, stir and mix evenly to get the lining material, release it for use;

[0019] (3) Preparation of bottom glue: by weight, according to fine sand: cement: 801 glue is 2: (1-1.5): (0.4-0.7) retrieving (this embodiment is 2: 1.2: 0.6), first the river Put the sand and c...

Embodiment 2

[0030] When the present invention mixes materials in step (2), by weight, by fine sand: cement: 801 glue is 2: 1.0: 0.10 takes material;

[0031] When the present invention prepares base glue in step (3), by weight, by fine sand: cement: 801 glue is 2: 1: 0.4 takes material;

[0032] The present invention is in step (5), and described maintenance is to carry out natural maintenance when ambient temperature is more than 20 ℃, waters 3 times after initial setting, and each time interval is 1 hour-2 hour (the present embodiment is 1 hour ).

[0033] The rest are the same as embodiment 1.

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PUM

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Abstract

The present invention discloses a method for coating cement lining on pipe fitting with a firm cement lining structure, which is characterized by comprising the following steps of: 1, preparing materials: sieving river sand and preparing 801 glue; 2, stirring the materials: weighing fine sand, cement and the 801 glue according to the proportion of 2:(1-1.5):(0.1-0.15) by weight, stirring and uniformly mixing to obtain the lining; 3, preparing prime coat: weighing the fine sand, the cement and the 801 glue according to the proportion of 2:(1-1.5):(0.4-0.7) by weight; 4, coating the lining: coating and brushing the prime coat obtained in the step 3 on the inner wall of the pipe fitting, placing the lining obtained in the step 2 on the inner wall subjected to the prime coat brushing, uniformly spreading the lining by using a tool, pressing the lining by using a tool, modifying the lining to be smooth and flat by using a tool; and 5, curing. The method for coating cement lining on pipe fitting with a firm cement lining structure provided by the present invention has simple process and easy holding, improves the lining strength and the product surface quality, shortens the production period, improves the production efficiency and lowers the production cost.

Description

Technical field: [0001] The invention relates to a lining coating method for pipe fittings, in particular to a cement lining coating method for pipe fittings. Background technique: [0002] At present, the lining of pipe fittings generally adopts the wet cement lining process. Cement, sand, water, and coagulant are mixed in proportion, and the lining surface is smoothed when the cement mortar is initially set. The connection is transitioned with a circular arc, and the steam curing is carried out after 3 to 5 hours of initial setting. Due to the high water content, when the lining is applied manually, the water in the mortar cannot be discharged, resulting in pores between the pipe wall and the cement layer that affect the adhesion, and the density of the cement layer is not enough to affect the strength. Invention content: [0003] The purpose of the present invention is to provide a method for coating the cement lining of pipe fittings with firm cement lining structure....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B21/72B28B21/92
Inventor 杨楚谋刘新喜
Owner 桃江新兴管件有限责任公司
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