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Mandrel lubricant special for high alloy oil well pipe hot continuous rolling

A technology of oil well pipe and hot continuous rolling, which is applied in the direction of lubricating composition and petroleum industry, which can solve the problem of extremely high performance requirements of mandrel lubricant, inability to provide sufficient lubrication, and difficulty in ensuring the rolling quality and rolling efficiency of high-alloy pipes and other issues, to achieve the effect of protecting environmental safety and human health, saving oil resource consumption, and improving the level of green manufacturing

Inactive Publication Date: 2017-11-17
SHANGHAI YUSHIRO CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the continuous rolling process, the performance requirements of the mandrel lubricant are extremely high, and continuous rolling production is very difficult. Traditional hot-rolled steel pipe mandrel lubricants are difficult to ensure the rolling quality and rolling efficiency of high-alloy pipes
[0003] At present, most common mandrel lubricants on the market have defects such as insufficient high temperature lubricity, low adsorption capacity and large smoke.
In the process of rolling high-alloy oil well pipes, sufficient lubrication cannot be provided between the mandrel and the pipe wall, the life of the mandrel is short, the quality of the inner surface of the steel pipe is poor, and the environmental pollution of the workshop is relatively large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The following weight components are mixed and stirred under certain conditions to obtain the product:

[0040] Natural Flake Graphite 28%

[0041] Sodium tripolyphosphate 1.0%

[0042] Borax 2.0%

[0043] EVA emulsion 1.5%

[0044] Triethanolamine 1.0%

[0045] Fatty acid polyoxyethylene ether C 17 h 33 COO (CH 2 CH 2 o) n H 0.6%

[0046] Polyethylene Glycol 1500 Dioleate 2.0%

[0047] Methylcellulose 0.4%

[0048] Organic bentonite 0.2%

[0049] Alumina trihydrate 0.3%

[0050] Magnesium hydroxide 0.2%

[0051] Pure water 62.8%.

Embodiment 2

[0053] A special mandrel lubricant for hot continuous rolling of high-alloy oil well pipe, which is made by mixing and stirring the following ingredients in mass percentage:

[0054] Natural flake graphite 20~35% (eg 20%, 30%, 35%)

[0055] Sodium tripolyphosphate 0.5~1.5% (eg 0.5%, 1%, 1.5%)

[0056] Borax 1~3.0% (eg 1%, 2%, 3%)

[0057] EVA emulsion 0.5~2.5% (eg 0.5%, 1%, 2.5%)

[0058] Triethanolamine 0.5~1.5% (eg 0.5%, 1%, 1.5%)

[0059] Fatty acid polyoxyethylene ether C 17 h 33 COO (CH 2 CH 2 o) n H 0.3~1% (eg 0.3%, 0.7%, 1%)

[0060] Polyethylene glycol 1500 dioleate 1~3% (eg 1%, 2%, 3%)

[0061] Methylcellulose 0.2~0.7% (eg 0.2%, 0.5%, 0.7%)

[0062] Organic bentonite 0.1~0.4% (eg 0.1%, 0.2%, 0.4%)

[0063] Alumina trihydrate 0.1~0.5% (eg 0.1%, 0.3%, 0.5%)

[0064] Magnesium hydroxide 0.1~0.3% (eg 0.1%, 0.2%, 0.3%)

[0065] Pure water 55~70% (eg 55%, 62%, 70%);

[0066] The sum of the amounts of the above-mentioned components is 100%.

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Abstract

The invention discloses a mandrel lubricant special for high alloy oil well pipe hot continuous rolling. The mandrel lubricant is composed of natural flake graphite, sodium tripolyphosphate, borax, an EVA emulsion, triethanolamine, fatty acid polyoxyethylene ether C17H33COO(CH2 CH2O)nH, polyethylene glycol 1500 dioleate, methylcellulose, organic bentonite, alumina trihydrate, magnesium hydroxide, and pure water. The mandrel lubricant provided by the invention has the advantages of high lubricity, large adsorption capacity, low smoke density during use, and human and environmental friendliness.

Description

technical field [0001] The invention relates to a mandrel lubricant specially used for hot continuous rolling of oil well pipes. Background technique [0002] With the increase in energy demand, oil and gas producers began to turn to the development of oil fields and natural gas wells with harsher corrosive environments. Oil and gas extraction is faced with the harsh environment of "three highs" of high temperature and high pressure, high acidity and high risk. The carbon steel and low alloy steel pipes commonly used in the past are difficult to guarantee sufficient corrosion resistance. Experiments have proved that adding Cr element to the material can effectively improve the CO resistance of the metal material. 2 Corrosion properties, high alloy martensitic stainless steel pipes have good resistance to CO at 150°C 2 Corrosion ability. In high-alloy martensitic stainless steel, nickel and molybdenum elements are added to make it CO 2 It has excellent anti-pitting corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10N40/24
CPCC10M173/02C10M2201/041C10M2201/062C10M2201/085C10M2201/087C10M2201/103C10M2205/022C10M2209/062C10M2209/104C10M2209/109C10M2215/042C10N2030/30C10N2040/24
Inventor 俞威阿部聪林丽静袁寅力赵红星
Owner SHANGHAI YUSHIRO CHEM IND
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