CN105483589A - Production technology of galvanized pipe for greenhouse bracket - Google Patents

Abstract

The invention discloses a production technology of a galvanized pipe for a greenhouse bracket. The production technology comprises the following steps: 1), carrying out hot-dip galvanizing on a pipeline; 2), draining zinc; 3), cooling: cooling the inside and the outside of the pipeline to 118DEG C at a speed of 15DEG C/min; 4), internally blowing: using 117DEG C steam to carry out internal blowing under the pressure of 1.3MPa for 42 seconds, and blowing excessive zinc powder in the pipeline into a zinc barrel; 5), carrying out passivation filming treatment; 6), carrying out surface treatment; 7), preheating at a temperature of 227DEG C for 55min; 8), coating plastic; and 9), curing: placing the pipeline in a 2400DEG C oven and curing for 20min. The pipeline prepared by the production technology of the galvanized pipe for the greenhouse bracket is high in corrosion resistance and long in service life.

Description

The production technique of greenhouse bracket galvanized pipe

Technical field

The present invention relates to the production technique of greenhouse bracket galvanized pipe.

Background technology

Galvanized pipe, also known as galvanized steel pipe, the solidity to corrosion of existing galvanized pipe haves much room for improvement.

Summary of the invention

The object of the present invention is to provide a kind of production technique of greenhouse bracket galvanized pipe, its pipe fitting solidity to corrosion prepared is strong, long service life.

For achieving the above object, technical scheme of the present invention designs a kind of production technique of greenhouse bracket galvanized pipe, comprises the steps:

1) galvanizing is carried out to pipe fitting;

2) drop zinc;

3) cool: make inside and outside pipe fitting, to be cooled to 118 DEG C with 15 DEG C/min;

4) blow in: utilize steam carry out in blow, interior blow pressure power is 1.3MPa, and the temperature of steam is 117 DEG C, and the time is 42 seconds, is blown into by zinc powder unnecessary in pipe fitting in zinc bucket;

5) passivation film forming process: by weight, treatment solution used is composed of the following components:

2.4 parts of SODIUM PHOSPHATE, MONOBASIC,

6.5 parts of methacrylic acid carboxylic ethyl esters,

2.1 parts of methyl methacrylates,

0.8 part of o-phthalic acid dibutyl ester,

1.7 parts of SODIUM PHOSPHATE, MONOBASIC,

0.7 part of mica powder,

2.2 parts of basalt fibre powder;

6) surface treatment;

7) preheating: preheating temperature is 227 DEG C, preheating 55min;

8) plastic-coated;

9) solidify: the baking oven that pipe fitting is placed in 2400 DEG C solidifies 20min.

Advantage of the present invention and beneficial effect are: the production technique providing a kind of greenhouse bracket galvanized pipe, and its pipe fitting solidity to corrosion prepared is strong, long service life.

Embodiment

Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.

The technical scheme that the present invention specifically implements is:

A production technique for greenhouse bracket galvanized pipe, comprises the steps:

1) galvanizing is carried out to pipe fitting;

2) drop zinc;

3) cool: make inside and outside pipe fitting, to be cooled to 118 DEG C with 15 DEG C/min;

4) blow in: utilize steam carry out in blow, interior blow pressure power is 1.3MPa, and the temperature of steam is 117 DEG C, and the time is 42 seconds, is blown into by zinc powder unnecessary in pipe fitting in zinc bucket;

5) passivation film forming process: by weight, treatment solution used is composed of the following components:

2.4 parts of SODIUM PHOSPHATE, MONOBASIC,

6.5 parts of methacrylic acid carboxylic ethyl esters,

2.1 parts of methyl methacrylates,

0.8 part of o-phthalic acid dibutyl ester,

1.7 parts of SODIUM PHOSPHATE, MONOBASIC,

0.7 part of mica powder,

2.2 parts of basalt fibre powder;

6) surface treatment;

7) preheating: preheating temperature is 227 DEG C, preheating 55min;

8) plastic-coated;

9) solidify: the baking oven that pipe fitting is placed in 2400 DEG C solidifies 20min.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. the production technique of greenhouse bracket galvanized pipe, is characterized in that, comprises the steps:

1) galvanizing is carried out to pipe fitting;

2) drop zinc;

3) cool: make inside and outside pipe fitting, to be cooled to 118 DEG C with 15 DEG C/min;

4) blow in: utilize steam carry out in blow, interior blow pressure power is 1.3MPa, and the temperature of steam is 117 DEG C, and the time is 42 seconds, is blown into by zinc powder unnecessary in pipe fitting in zinc bucket;

5) passivation film forming process: by weight, treatment solution used is composed of the following components:

2.4 parts of SODIUM PHOSPHATE, MONOBASIC,

6.5 parts of methacrylic acid carboxylic ethyl esters,

2.1 parts of methyl methacrylates,

0.8 part of o-phthalic acid dibutyl ester,

1.7 parts of SODIUM PHOSPHATE, MONOBASIC,

0.7 part of mica powder,

2.2 parts of basalt fibre powder;

6) surface treatment;

7) preheating: preheating temperature is 227 DEG C, preheating 55min;

8) plastic-coated;

9) solidify: the baking oven that pipe fitting is placed in 2400 DEG C solidifies 20min.