Steel pipe diameter expanding oil composition and use thereof

Abstract

The invention mainly relates to a steel pipe diameter expanding oil composition and use thereof, and mainly solves the problems that in the prior art, before expanding of the diameter, in order to remove solid particles remaining on the surface of a pipe, the to-be-processed pipe is washed with water and then expanded in the diameter, and residual moisture on the surface of the workpiece may greatly reduce the lubricating effects of diameter expanding oil. The steel pipe diameter expanding oil composition comprises the following components in parts by weight: a) 5 to 10 parts of an extreme-pressure anti-wear agent; b) 20 to 40 parts of a surfactant; c) 5 to 10 parts of a rust inhibitor; d) 5-10 parts of a thickener; e) 0.05 to 0.1 part of a defoaming agent; and f) 30 to 65 parts of base oil, and the technical solution can well solve the problem, and can be used for industrial production of the steel pipe diameter expanding oil composition.

Description

technical field

[0001] The invention relates to a steel pipe diameter expanding oil composition and its application. Background technique

[0002] Steel pipe expansion oil is mainly used for lubricating the working part of the expansion head in the production of large-diameter steel pipes, such as the large-diameter longitudinal submerged arc welded pipe dedicated to the main line of the national key project of the West-East Gas Transmission Project, which is used for strong diameter expansion, shaping and During the process of eliminating internal stress, steel pipe expansion oil as a supporting lubricating material for this special process can keep the two working surfaces of the sliding and guiding friction pairs of the pipe wall and the expansion head lubricated. The process requires steel pipe expansion oil to be used The oil film formed in the process can prevent all friction surfaces from being damaged under high pressure. At the same time, it is also required that th...

Examples

Embodiment 1～3

[0034] Preparation of sulfurized fatty acid amide: add sulfurized fatty acid to the mixing tank, raise the temperature to 110°C, add triethanolamine continuously while stirring, the molar ratio is 1:1, and continue stirring and heating for 2 hours.

[0035] Put the base oil into the blending kettle, stir, heat up to 50°C and maintain at this temperature; add extreme pressure anti-wear agent, stir evenly; then add surfactant, stir evenly; finally add rust inhibitor and thickener, stir and Heating is stopped, the temperature is gradually lowered to room temperature, and stirring is stopped to obtain the composition. The type and amount of each component in the composition are specifically shown in Table 1.

Embodiment 1

[0037] The composition was prepared according to the document CN102031186A [Example 1]. Its composition is:

[0038] 35 parts of oxidized rapeseed oil; 3.9 parts of polyether with a molecular weight of 50,000; 3.5 parts of vulcanized lard; 10 parts of chlorinated paraffin; 5 parts of trialkyl phosphate; 2 parts; 12 parts of castor oil polyoxyethylene ether; 10 parts of dodecenyl succinate; 2 parts of sorbitan oleate; 12 parts of polyether with a molecular weight of 20,000; 0.1 part of methyl silicone oil.

technical field

[0001] The invention relates to a steel pipe diameter expanding oil composition and its application. Background technique

[0002] Steel pipe expansion oil is mainly used for lubricating the working part of the expansion head in the production of large-diameter steel pipes, such as the large-diameter longitudinal submerged arc welded pipe dedicated to the main line of the national key project of the West-East Gas Transmission Project, which is used for strong diameter expansion, shaping and During the process of eliminating internal stress, steel pipe expansion oil as a supporting lubricating material for this special process can keep the two working surfaces of the sliding and guiding friction pairs of the pipe wall and the expansion head lubricated. The process requires steel pipe expansion oil to be used The oil film formed in the process can prevent all friction surfaces from being damaged under high pressure. At the same time, it is also required that th...

Examples

Embodiment 1～3

[0034] Preparation of sulfurized fatty acid amide: add sulfurized fatty acid to the mixing tank, raise the temperature to 110°C, add triethanolamine continuously while stirring, the molar ratio is 1:1, and continue stirring and heating for 2 hours.

[0035] Put the base oil into the blending kettle, stir, heat up to 50°C and maintain at this temperature; add extreme pressure anti-wear agent, stir evenly; then add surfactant, stir evenly; finally add rust inhibitor and thickener, stir and Heating is stopped, the temperature is gradually lowered to room temperature, and stirring is stopped to obtain the composition. The type and amount of each component in the composition are specifically shown in Table 1.

Embodiment 1

[0037] The composition was prepared according to the document CN102031186A [Example 1]. Its composition is:

[0038] 35 parts of oxidized rapeseed oil; 3.9 parts of polyether with a molecular weight of 50,000; 3.5 parts of vulcanized lard; 10 parts of chlorinated paraffin; 5 parts of trialkyl phosphate; 2 parts; 12 parts of castor oil polyoxyethylene ether; 10 parts of dodecenyl succinate; 2 parts of sorbitan oleate; 12 parts of polyether with a molecular weight of 20,000; 0.1 part of methyl silicone oil.

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