Stretching oil easy to clean and preparation method thereof

Abstract

The invention belongs to the field of stamping and drawing forming, particularly relates to easy-to-clean drawing oil and a preparation method thereof, and discloses the easy-to-clean drawing oil. The easy-to-clean drawing oil is prepared from the following components in percentage by mass: 10%-20% of 150SN base oil, 52.5%-60% of 150SN base oil, 1%-8% of trimethylolpropane oleate, 2%-5% of sorbitol monooleate, 2%-6% of polyisobutene 1300, 1%-5% of polysorbate 80, 0.5%-2% of polyisobutene 2400, 1%-4% of sulfurized methyl ester and 3%-7% of sulfurized lard. 0.2%-2% of 2, 6-di-tert-butyl-p-methylphenol and 4%-8% of triglyceride sulfide. The easy-to-clean drawing oil also has good lubricity in a harsh stamping and drawing process, is easy to clean, and can effectively guarantee the service life of a die, the dimensional precision of a workpiece, the surface roughness and the smoothness.

Description

Technical Field

[0001] The invention belongs to the field of stamping and stretching forming, and in particular relates to an easy-to-clean stretching oil and a preparation method thereof. Background Art

[0002] In metal processing, a stretching process is required to ensure the performance of metal processed parts. During the stretching process, stretching oil is required to isolate and protect the mold and the workpiece, prevent the mold from being scratched, and improve the success rate of workpiece stretching.

[0003] Existing stretching oils mostly use mineral oil and machine oil to ensure better isolation and protection effects. However, these oils will accumulate on the surface of the stretching workpiece and are difficult to remove, which brings difficulties to the subsequent operation process. A large amount of energy is required for cleaning, and the large amount of cleaning agents used will cause secondary pollution, which increases the cost. An easy-to-clean stretching oil is needed.

[0004] In addition, with the continuous development of processing technology, the demand for stretching oil is becoming increasingly diversified. Stretching oil is required to be able to adapt to the stretching needs of different materials. It is urgent to develop stretching oil that can meet the stretching needs of different materials and is easy to clean. Summary of the invention

[0005] In order to solve the above technical problems, the present invention has developed an easy-to-clean stretching oil and a preparation method thereof through formula screening. The easy-to-clean stretching oil has good lubricity and is easy to clean, and can be applied to the stretching process of different materials in metal processing.

[0006] On the one hand, the present invention provides an easy-to-clean stretching oil, which is composed, by mass percentage, of 10%-20% of 150SN base oil, 52.5%-60% of 150SN base oil, 1%-8% of trimethylolpropane oleate, 2%-5% of sorbitol monooleate, 2%-6% of polyisobutene 1300, 1%-5% of polysorbate 80, 0.5%-2% of polyisobutene 2400, 1%-4% of methyl sulfide, 3%-7% of sulfurized lard, 0.2%-2% of 2.6-di-tert-butyl-p-methylphenol, and 4%-8% of sulfurized triglyceride.

[0007] Further, preferably, the easy-to-clean stretching oil is composed, by mass percentage, of 10% 150SN base oil, 60% 150SN base oil, 8% trimethylolpropane oleate, 3% sorbitol monooleate, 3% polyisobutene 1300, 1% polysorbate 80, 0.5% polyisobutene 2400, 3% methyl sulfide, 7% sulfurized lard, 0.5% 2.6-di-tert-butyl-p-methylphenol, and 4% sulfurized triglyceride.

[0008] Furthermore, the polyisobutylene 1300 and polyisobutylene 2400 in the easy-to-clean stretching oil adjust the oil film strength and the compressive resistance of the oil.

[0009] Furthermore, the methyl sulfide, lard sulfide and triglyceride sulfide in the easy-to-clean stretching oil play an extreme pressure lubricating role.

[0010] Furthermore, in the easy-to-clean stretching oil, the 2,6-di-tert-butyl-p-methylphenol is an antioxidant.

[0011] Furthermore, in the easy-to-clean stretching oil, the sorbitan monooleate or polysorbate 80 is a rust inhibitor and a lipophilic emulsifier.

[0012] Furthermore, the trimethylolpropane oleate in the easy-to-clean stretching oil is an oiliness agent.

[0013] On the other hand, the present invention provides a method for preparing the easy-to-clean stretching oil, characterized in that it comprises the following steps:

[0014] Add 150SN base oil and 150SN base oil into a clean blending kettle and heat to 50-60℃, add trimethylolpropane oleate and stir evenly until transparent, add sorbitan monooleate and stir evenly until transparent, add polyisobutylene 1300 and polyisobutylene 2400 and stir evenly until transparent, add 2.6-di-tert-butyl-p-methylphenol mixture dissolved in 150SN base oil, add methyl sulfide, sulfided lard and sulfided triglyceride and stir evenly, finally add polysorbate 80 and stir evenly.

[0015] In addition, the present invention also provides application of the easy-to-clean stretching oil in the field of stretching molding.

[0016] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:

[0017] (1) In the present invention, trimethylolpropane oleate, sorbitol monooleate, polysorbate 80 are compounded, and 150SN base oil high viscosity base oil is used and the viscosity is adjusted with 150SN base oil to achieve a higher viscosity and oiliness agent compounding, so that the oil product has good adhesion performance and sufficient oil film thickness even at a higher temperature. It also has good lubricity in the harsh stamping and stretching process, which can effectively guarantee the mold life, workpiece dimensional accuracy, surface roughness and finish.

[0018] (2) In the present invention, methyl sulfide, lard sulfide and triglyceride sulfide are compounded, which has good lubricity even in harsh stamping and stretching processes, and can effectively ensure the life of the mold, the dimensional accuracy of the workpiece, and the surface roughness and smoothness.

[0019] (3) In the present invention, the easy-to-clean stretching oil uses polyisobutylene 1300 (PIB1300) and polyisobutylene 2400 (PIB2400) as oil film thickness and strength adjusters. Compared with PIB1300, PIB2400 has higher viscosity, higher oil film strength, and better viscosity-pressure performance. The ratio of PIB1300 to PIB2400 in the formula can be flexibly adjusted according to viscosity and demanding process requirements. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is described below in conjunction with embodiments; however, the present invention is not limited to the following embodiments.

[0021] The experimental methods and detection methods in the following embodiments are all conventional methods unless otherwise specified; the raw materials and materials are all commercially available unless otherwise specified; the index data are all conventional measurement methods unless otherwise specified.

[0022] Example 1

[0023] This embodiment provides a formula for easy-to-clean stretching oil.

[0024] According to the mass percentages of 150SN base oil, 150SN base oil, trimethylolpropane oleate, sorbitan monooleate, polyisobutylene 1300, polysorbate 80, polyisobutylene 2400, methyl sulfide, lard sulfide, 2.6-di-tert-butyl-p-methylphenol and triglyceride sulfide in Table 1, the 1#, 2#, 3# and 4# easy-to-clean stretch oil formulations were formed.

[0025] Table 1 Formula of easy-to-clean stretch oil

[0026]

[0027]

[0028] Example 2

[0029] This embodiment is for preparing easy-to-clean stretching oil.

[0030] According to the mass percentage of each raw material of the easy-to-clean stretching oil 1#-4# in Example 1, 150SN base oil, 150SN base oil, trimethylolpropane oleate, sorbitol monooleate, polyisobutylene 1300, polysorbate 80, polyisobutylene 2400, methyl sulfide, sulfurized lard, 2.6-di-tert-butyl-p-methylphenol, and sulfurized triglyceride were weighed respectively.

[0031] Add 150SN base oil and 150SN base oil into a clean blending kettle and heat to 50-60℃, add trimethylolpropane oleate and stir evenly until transparent, add sorbitol monooleate and stir evenly until transparent, add polyisobutylene 1300 and polyisobutylene 2400 and stir evenly until transparent, add 2.6-di-tert-butyl-p-methylphenol mixture dissolved in 150SN base oil, add methyl sulfide, sulfided lard and sulfided triglyceride and stir evenly, finally add polysorbate 80 and stir evenly to prepare 1#, 2#, 3# and 4# easy-to-clean stretching oils.

[0032] Example 3

[0033] This embodiment is a test for the performance of easy-to-clean stretching oil.

[0034] The 1#-4# easy-to-clean stretching oils prepared in Example 2 were tested for appearance, viscosity, oil film strength (Pb) and extreme pressure performance index (Pd) of the stretching oil. The test results are shown in Table 2

[0035] Table 2 Easy-to-clean tensile oil performance test

[0036]

[0037] The test results in Table 2 show that the viscosity, oil film strength and extreme pressure performance indexes of 2# easy-to-clean stretching oil are better than those of other groups, indicating that 2# easy-to-clean stretching oil is the best embodiment of the present invention.

[0038] Example 4

[0039] This example is a cleaning performance evaluation test of 1#-4# easy-to-clean stretching oil.

[0040] The washability was evaluated by the emulsification of the oil. The 1#-4# easy-to-clean stretching oil prepared in Example 2 was diluted to 5wt% of the 1#-4# easy-to-clean stretching oil diluent, and allowed to stand for 24 hours. The amount of oil precipitation was observed to determine the stability of the dilution, and the emulsification performance of the dilution was tested. The results are shown in Table 3.

[0041] Table 3 Emulsification performance and stability test of easy-to-clean stretch oil

[0042]

[0043] The test results show that after 1#-4# easy-to-clean stretching oil is diluted to 5wt% dilution, 1#-4# easy-to-clean stretching oil has no oil separation phenomenon, indicating that the easy-to-clean stretching oil product of the present invention has good stability, and 1#-4# easy-to-clean stretching oil shows good emulsification performance after dilution, especially 2# and 4# have better emulsification performance, indicating that the product of the present invention has good cleaning performance.

[0044] As described above, the present invention can be well implemented. The above embodiments only describe the preferred implementation methods of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various changes and improvements made to the technical scheme of the present invention by ordinary technicians in this field should fall within the protection scope determined by the present invention.

Claims

1. An easy-to-clean stretching oil, characterized in that: The easy-to-clean stretching oil consists, by mass percentage, of 10%-20% of 150SN base oil, 52.5%-60% of 150SN base oil, 1%-8% of trimethylolpropane oleate, 2%-5% of sorbitol monooleate, 2%-6% of polyisobutylene 1300, 1%-5% of polysorbate 80, 0.5%-2% of polyisobutylene 2400, 1%-4% of methyl sulfide, 3%-7% of sulphurized lard, 0.2%-2% of 2.6-di-tert-butyl-p-methylphenol and 4%-8% of sulphurized triglyceride.

2. The easy-to-clean stretching oil according to claim 1, characterized in that: The easy-to-clean stretching oil consists, by mass percentage, of 10% of 150SN base oil, 60% of 150SN base oil, 8% of trimethylolpropane oleate, 3% of sorbitol monooleate, 3% of polyisobutylene 1300, 1% of polysorbate 80, 0.5% of polyisobutylene 2400, 3% of methyl sulfide, 7% of sulfurized lard, 0.5% of 2.6-di-tert-butyl-p-methylphenol, and 4% of sulfurized triglyceride.

3. The easy-to-clean stretching oil according to claim 1, characterized in that: The polyisobutylene 1300 and the polyisobutylene 2400 adjust the oil film strength and the pressure resistance of the oil product.

4. The easy-to-clean stretching oil according to claim 1, characterized in that: The methyl sulfide, lard sulfide and triglyceride sulfide play an extreme pressure lubricating role.

5. The easy-to-clean stretching oil according to claim 1, characterized in that: The 2,6-di-tert-butyl-p-methylphenol is an antioxidant.

6. The easy-to-clean stretching oil according to claim 1, characterized in that: The sorbitan monooleate or polysorbate 80 is a rust preventive and a lipophilic emulsifier.

7. The easy-to-clean stretching oil according to claim 1, characterized in that: The trimethylolpropane oleate is an oiliness agent.

8. The method for preparing the easy-to-clean stretching oil according to claims 1-7, characterized in that: The following steps are included: Add 150SN base oil and 150SN base oil into the blending kettle and heat it to 50-60℃, then add trimethylolpropane oleate and stir, then add sorbitol monooleate and stir evenly, then add polyisobutylene 1300 and polyisobutylene 2400 and stir, then add 2.6-di-tert-butyl-p-methylphenol mixture dissolved in 150SN base oil, methyl sulfide, sulfurized lard, and sulfurized triglyceride and stir evenly, finally add polysorbate 80 and stir evenly.

9. Use of the easy-to-clean stretching oil according to any one of claims 1 to 7 in the field of stretching forming.

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