CN106635285B

CN106635285B - Cold heading oil composition and use thereof

Info

Publication number: CN106635285B
Application number: CN201610834027.XA
Authority: CN
Inventors: 巩亚; 何晓瑛; 徐魏; 益梅蓉; 周霞
Original assignee: China Petrochemical Corp
Current assignee: China Petrochemical Corp
Priority date: 2016-09-20
Filing date: 2016-09-20
Publication date: 2020-01-17
Anticipated expiration: 2036-09-20
Also published as: CN106635285A

Abstract

The invention relates to a cold heading oil composition and application thereof, and mainly solves the problems that in the prior art, the extreme pressure wear resistance and copper corrosion resistance of cold heading oil cannot simultaneously meet the use requirements of cold heading equipment for supplying oil for part of cold heading processes and equipment lubrication in a unified way, so that the surface of a workpiece is roughened or a transmission gear shaft is corroded. The invention comprises the following components in parts by weight: a)100 parts of mineral base oil; b) 0.1-5.0 parts of extreme pressure antiwear agent; c)0.01 to 0.5 parts of a metal deactivator; d) 1.0-15.0 parts of an oiliness agent; e) 0.005-0.5 of an antifoaming agent; the extreme pressure antiwear agent is a mixture of sulfurized olefin and at least one selected from sulfurized isobutylene, phenyl sulfide, sulfurized fatty acid ester or thiophosphoric acid complex ester amine salt; the metal deactivator is at least one of benzotriazole derivatives or thiadiazole derivatives; the oiliness agent is selected from vulcanized vegetable oil and at least one mixture of fatty acid ester or higher fatty alcohol, so that the technical scheme better solves the problem, and the oiliness agent can be used for a cold header for lubricating and uniformly supplying oil for a partial cold header process and equipment.

Description

Cold heading oil composition and use thereof

Technical Field

The invention relates to a cold heading oil composition and application thereof.

Background

The cold heading process is one of the important processes in the metal processing process, and is an indispensable manufacturing method for the automatic production of special shapes on mass-produced automobile fasteners, motorcycles, bicycles and household appliances. The cold heading forming oil has the characteristics of high forming contact stress, high extreme pressure performance requirement on cold heading forming oil, and the like. Therefore, active sulfur additives with excellent extreme pressure performance and the like are often used in large quantities in cold heading forming oil products, but the corrosion of the active sulfur additives to brass is high.

Gears are important components in transmissions. The gear oil is an important lubricating material for ensuring the working efficiency of gear transmission and prolonging the service life of the gear, and mainly plays the roles of preventing tooth surface abrasion, taking away heat generated by friction, isolating the tooth surface from being contacted with water and air, avoiding rusting and corrosion and the like in a gear mechanism. Compared with cold heading forming oil, the anti-corrosion performance of the metal (including brass) protective box is higher.

In the conventional cold heading process, the oil for the gearbox equipment and the oil for the cold heading process are respectively independent lubricating systems, and industrial gear oil and cold heading forming oil are respectively used. However, in some cold heading equipment, a gear lubricating system and a cold heading forming process oil system are unified in the design process, so that the equipment oil and the process oil use the same lubricating oil product.

The existing common cold heading forming oil uses a large amount of active sulfur additives with excellent extreme pressure performance in order to meet the requirement of a cold heading process on high extreme pressure wear resistance of an oil product, and after the cold heading forming oil is used on cold heading equipment for lubricating and uniformly supplying oil to the cold heading process and the equipment, the corrosion resistance of copper sheets is good, the surface of a workpiece is napped, or the workpiece meets the standard requirement, and the transmission shaft is seriously corroded. Therefore, the common cold heading oil cannot meet the oil requirement of lubricating parts of processes and equipment.

Through the inquiry of domestic and foreign patents and documents, a common cold heading oil technology is found, for example, patent CN 104403738A relates to a common cold heading oil composition, and because the dosage of an extreme pressure additive is large, the common cold heading oil composition is only suitable for common cold headers.

Disclosure of Invention

One of the technical problems to be solved by the invention is that the extreme pressure wear resistance and the copper corrosion resistance of the cold heading oil in the prior art cannot simultaneously meet the use requirements of cold heading equipment for supplying oil uniformly by part of cold heading processes and equipment lubrication, so that the surface of a workpiece is roughened or a transmission gear shaft is corroded, and the invention provides a novel cold heading oil composition for both cold heading and lubrication. The second technical problem to be solved by the invention is to provide the application of the cold heading oil composition. The composition has higher extreme pressure wear resistance and excellent copper sheet corrosion resistance, and can be suitable for a special cold header for lubricating and uniformly supplying oil for partial cold heading process and equipment.

In order to solve one of the above technical problems, the technical scheme adopted by the invention is as follows: the cold heading oil composition comprises the following components in parts by weight:

a)100 parts of mineral base oil;

b) 0.1-5.0 parts of extreme pressure antiwear agent;

c)0.01 to 0.5 parts of a metal deactivator;

d) 1.0-15.0 parts of an oiliness agent;

e) 0.005-0.5 of an antifoaming agent;

the extreme pressure antiwear agent is a mixture of sulfurized olefin and at least one selected from sulfurized isobutylene, phenyl sulfide, sulfurized fatty acid ester or thiophosphoric acid complex ester amine salt;

the metal deactivator is at least one of benzotriazole derivatives or thiadiazole derivatives;

the oiliness agent is selected from vulcanized vegetable oil and at least one mixture selected from fatty acid ester or higher fatty alcohol.

In the technical scheme, preferably, the amount of the extreme pressure antiwear agent is 0.5-3.0 parts, the amount of the metal deactivator is 0.02-0.3 parts, the amount of the oiliness agent is 6.0-12.0 parts, and the amount of the antifoaming agent is 0.01-0.3 parts by weight.

In the technical scheme, in the extreme pressure antiwear additive mixture, the weight ratio of sulfurized olefin to at least one of sulfurized isobutylene, phenyl sulfide, sulfurized fatty acid ester or thiophosphoric acid complex ester amine salt is 1: 0.1-1.0; preferably 1 to (0.1-0.8); more preferably 1 to (0.1 to 0.6).

In the technical scheme, in the oily agent mixture, the ratio of the vulcanized vegetable oil to at least one of fatty acid ester or higher fatty alcohol is 1: 0.1-1.0; preferably 1 to (0.1-0.8); more preferably 1 to (0.1 to 0.6).

In the above technical solution, the benzotriazole derivative is at least one selected from N, N-dibutylaminomethylene-alkylphenyltriazole or a condensate of benzotriazole, aldehyde and amine.

In the above technical scheme, the thiadiazole derivative is selected from at least one of a 2, 5-dimercapto-1, 3, 4-thiadiazole derivative, a 2, 5-dimercapto-1, 3, 4-thiadiazole derivative or a di-n-octyl disulfide mixture.

In the above technical solution, the anti-foaming agent is at least one selected from alkyl silicone oil, acrylate and ether copolymer or a mixture thereof.

In the technical scheme, the mineral base oil is at least one selected from solvent refined base oil or hydrogenated mineral base oil, and the viscosity index is greater than 90.

In the above technical scheme, the composition further comprises at least one selected from a rust inhibitor and an antioxidant; the antirust agent is 0.01-1.0 part by weight, and the antioxidant is 0.05-1.2 parts by weight; wherein the antirust agent is selected from at least one of calcium petroleum sulfonate, dodecenylsuccinic acid or alkenyl succinic acid half ester; the antioxidant is at least one selected from alkylated diphenylamine, N-phenyl-alpha-naphthylamine or phenolic antioxidants.

The preparation method of the cold heading oil composition comprises the following steps: adding required amounts of metal deactivator, antioxidant, oiliness agent, antirust agent, detergent dispersant and anti-foaming agent into base oil at the temperature of 50-80 ℃, and stirring for 0.5-2 hours to completely dissolve the metal deactivator, the antioxidant, the oiliness agent, the antirust agent, the detergent dispersant and the anti-foaming agent; and (3) controlling the temperature to be 45-65 ℃, and adding the extreme pressure antiwear agent into the mixture to obtain the composition.

To solve the second technical problem, the invention adopts the following technical scheme: the cold heading oil composition is used for lubricating a special cold heading machine for lubricating and uniformly supplying oil for a cold heading process and equipment. Wherein the components, parts by weight and preferred ranges of the cold heading oil composition are the same as those in the technical scheme adopted for solving one of the technical problems.

The properties of the cold heading oil composition are evaluated using various test methods including a lubricant load capacity test (four ball method) -comprehensive wear index ZMZ (GB/T3142), a lubricant load capacity test (four ball method) (maximum no-seizure load P)_B) (GB/T3142), determination of the load-bearing Capacity of the Lubricant (four-ball method) (sintering load P)_D)(GB/T3142) The method comprises the steps of measuring the oxidation stability of the lubricating oil by using a rotating oxygen bomb method (SH/T1093), measuring the anti-wear performance of the lubricating oil by using a four-ball machine method (SH/T0189), adding an inhibitor mineral oil, and performing an anti-rust test in the presence of water (GB/T11143 or ASTM D665), and performing a copper sheet corrosion test on petroleum products (GB/T5906 or ASTM D130).

The invention adopts proper combination and screening of extreme pressure antiwear agent, oiliness agent and metal deactivator. The extreme pressure antiwear agent is a mixture of sulfurized olefin and at least one of sulfurized isobutylene, phenyl sulfide, sulfurized fatty acid ester or thiophosphoric acid complex ester amine salt. The oiliness agent is selected from a mixture of vulcanized vegetable oil and at least one of fatty acid ester and higher fatty alcohol. The metal deactivator is at least one of benzotriazole derivatives or thiadiazole derivatives. Fully utilizes the synergistic effect of the components, so that the composition has excellent extreme pressure anti-wear performance (the test of the four-ball method (comprehensive wear index ZMZ) is not less than 631N, and the test of the four-ball method (maximum non-seizure load P) is adopted_B) The maximum non-seizing load of the test is not less than 1000N, and a method for measuring the bearing capacity of the lubricant (four-ball method) (sintering load P) is adopted_D) (GB/T3142) the sintering load of the test is not less than 6080N, the wear scar diameter measured by a lubricating oil abrasion resistance test method (SH/T0189) is not more than 0.35mm, and the corrosion resistance (copper sheet corrosion) is excellent (the result of the test by a petroleum product copper sheet corrosion test method (GB/T5906 or ASTM D130) is not more than 1); meanwhile, the composition has excellent oxidation resistance and rust resistance, and achieves better technical effect.

The invention is further illustrated by the following examples.

Detailed Description

[ examples 1 to 6 ]

Respectively weighing required amounts of a metal deactivator, an antioxidant, an oiliness agent, an antirust agent, a detergent dispersant and an anti-foaming agent according to the weight parts in the table 1, adding the metal deactivator, the antioxidant, the oiliness agent, the antirust agent, the detergent dispersant and the anti-foaming agent into base oil (with a viscosity grade of 68), heating and stirring the mixture at 70 ℃ until the mixture is completely uniform, then reducing the temperature to 60 ℃, adding an extreme pressure antiwear agent, and stirring the mixture until the mixture is completely uniform to obtain the cold heading oil composition for both cold heading and lubrication. The types and the amounts of the components in the composition are shown in Table 1.

Wherein Rc2540 is a sulfurized olefin; t321 is sulfurized isobutylene; t307 is thiophosphoric acid complex ester amine salt; t404 is sulfurized cottonseed oil; t501 is 2, 6-di-tert-butyl-p-cresol; irganox L135 is a mixed type shielding component; irganox L57 is an alkylated diphenylamine; t552 is a benzotriazole, aldehyde, and amine condensate; t561 is a 2, 5-dimercapto-1, 3, 4-thiadiazole derivative; T747A is alkenyl succinic acid half ester; t922 is a composite of silicon-containing and non-silicon antifoam agents.

[ example 7 ]

The extreme pressure antiwear properties (comprehensive wear index, maximum seizure-free coincidence, sintering load, wear scar diameter), corrosion resistance (copper sheet corrosion), oxidation stability (rotary oxygen bomb value), and rust resistance (liquid phase rust B method) of the composition in [ examples 1 to 6 ] were tested, and the test results are shown in table 2.

Extreme pressure antiwear properties are one of the most important properties of cold heading oils. The indexes of the compositions in the [ examples 1 to 6 ] such as comprehensive abrasion index, maximum seizure-free coincidence, sintering load, abrasive wear pattern diameter and the like are tested. The higher the equivalent value of the comprehensive wear index, the maximum seizure-free coincidence, the sintering load and the grinding track diameter is, the better the extreme pressure wear resistance of the cold heading oil is; the smaller the wear-spot diameter is, the better the extreme pressure antiwear performance of the oil product is. In the extreme pressure anti-wear performance of each composition in examples 1 to 6, the comprehensive wear index is more than 631N, the sintering load is not less than 6080N, the diameter of a grinding spot is not more than 0.35mm, and the maximum seizure-free load value of each composition in examples 4 to 6 is not less than 1100N, which indicates that each composition can simultaneously meet the special requirements of a cold heading process. In comparison, the overall wear index (ZMZ) for each composition is, in order: example 6 > [ example 5 ] > [ example 4 ] > [ example 3 ] > [ example 2 ] > [ example 1 ]; the maximum non-seizure load of each composition is as follows: example 6 > [ example 5 ] > [ example 4 ] > [ example 3 ] > [ example 2 ] > [ example 1 ]; the sintering load of each composition is as follows: example 6 > [ example 5 ] > [ example 3 ] - [ example 2 ] - [ example 1 ]; the abrasive spot diameter of each composition is as follows: example 5 > [ example 6 ] > [ example 4 ] > [ example 3 ] > [ example 2 ] > [ example 1 ]. Therefore, by combining the 4 indexes for evaluating the extreme pressure anti-wear performance of the gear oil, the extreme pressure performance of each composition is as follows: example 6 > [ example 5 ] > [ example 4 ] > [ example 2 ] > [ example 1 ].

The corrosion resistance of the oil product to the copper sheet can be tested by using a corrosion resistance (copper sheet corrosion) test method. Generally, the lower the copper sheet corrosion level of the oil, the better the copper sheet corrosion resistance. The corrosion resistance (copper sheet corrosion) of each composition is shown in Table 2. As can be seen from the copper sheet corrosion experimental data in Table 2, each composition has no corrosivity to copper parts of the transmission gear shaft of the equipment, and can meet the special requirements of gear lubrication of cold heading equipment.

In addition, the results of the oxidation resistance and rust prevention tests of the compositions in the [ examples 3 to 6 ] show that the oxidation resistance and the rust prevention performance of the compositions can meet the special requirements of cold heading lubrication.

[ comparative examples 1 to 4 ]

According to the weight parts of comparative examples 1 to 4 in Table 1, respectively weighing required amounts of a metal deactivator, an antioxidant, an oiliness agent, an antirust agent, a detergent dispersant and an anti-foaming agent, adding the metal deactivator, the antioxidant, the oiliness agent, the antirust agent, the detergent dispersant and the anti-foaming agent into base oil (68 viscosity grade), heating and stirring the mixture at 70 ℃ until the mixture is completely uniform, then reducing the temperature to 60 ℃, adding an extreme pressure antiwear agent, and stirring the mixture until the mixture is completely uniform to obtain the cold heading oil composition [ comparative examples 1 to 4 ]. [ COMPARATIVE EXAMPLES 1 to 4 ] the kinds and amounts of the respective components in the composition are shown in Table 1.

[ COMPARATIVE EXAMPLE 5 ]

The extreme pressure anti-wear properties (comprehensive wear index (ZMZ), maximum non-seizure load, sintering load, wear scar diameter, and corrosion resistance (copper sheet corrosion)) of the compositions in comparative examples 1 to 4 were tested, and the test results are shown in table 2.

Compared with the compositions of the embodiments 1 to 6, the compositions of the comparative examples 1 to 4 have the maximum non-seizing load of less than 1000N and the abrasive wear diameter of more than 0.35mm, and can not meet the special requirements of the cold heading process; the corrosion resistance (copper sheet corrosion) test of each composition is more than 1 grade, and the special requirements of cold heading equipment gear lubrication cannot be met.

By combining the test results of the extreme pressure anti-wear property and the corrosion resistance (copper sheet corrosion) of the compositions in the examples 1 to 6 and the test results of the oxidation stability (rotating oxygen bomb method), the rust resistance (liquid phase rust B method) and the like of the compositions in the examples 3 to 6, the invention shows that the compositions have excellent extreme pressure anti-wear property (the test is not less than 631N by using a lubricant bearing capacity measuring method (four-ball method) (comprehensive wear index ZMZ), and the test is not less than 631N by using a lubricant bearing capacity measuring method (four-ball method) (maximum non-seizing load P by using a lubricant bearing capacity measuring method) (maximum non-seizing load P)_B) The maximum non-seizing load of the test is not less than 1000N, and a method for measuring the bearing capacity of the lubricant (four-ball method) (sintering load P) is adopted_D) (GB/T3142) the sintering load of the test is not less than 6080N, the wear scar diameter measured by a lubricating oil abrasion resistance test method (SH/T0189) is not more than 0.35mm, and the corrosion resistance (copper sheet corrosion) is excellent (the result of the test by a petroleum product copper sheet corrosion test method (GB/T5906 or ASTM D130) is not more than 1); meanwhile, the combination also has excellent oxidation resistance, rust prevention and corrosion prevention.

Claims

1. The cold heading oil composition comprises the following components in parts by weight:

a)100 parts of mineral base oil;

b)0.5 part of sulfurized olefin and 0.3 part of thiophosphoric acid complex ester amine salt;

c)0.1 part of a 2, 5-dimercapto-1, 3, 4-thiadiazole derivative;

d)9.0 parts of sulfurized cottonseed oil and 2.0 parts of isooctyl palmitate;

e)0.02 parts of a composite comprising silicon and a non-silicon anti-foaming agent;

and 0.3 parts of calcium petroleum sulfonate, 0.2 parts of alkylated diphenylamine and 0.1 part of mixed shielding phenol.

2. The cold heading oil composition of claim 1 for use in lubrication of a cold heading machine for unified oil feed for cold heading process and equipment lubrication.