A stamping oil, its preparation method and application

Abstract

The present invention discloses a stamping oil, its preparation method, and application. The stamping oil comprises the following components, measured in parts by weight: a) 75 to 90 parts of an oiliness agent; b) 6 to 12 parts of an extreme pressure agent; and d) 1 to 10 parts of a rust inhibitor. The oiliness agent is selected from at least two ester-type oiliness agents; the extreme pressure agent is selected from at least two sulfur-containing extreme pressure agents; and the rust inhibitor is selected from a sulfonate rust inhibitor. The stamping oil of the present invention does not contain chlorine or phosphorus, has excellent lubrication properties and resistance to moisture and heat, and can meet the deep drawing, drawing, and precision stamping requirements of stainless steel and other high-alloy steels.

Description

Technical Field

[0001] The invention relates to stamping oil and a preparation method and application thereof. Background Art

[0002] The deep drawing, drawing, and precision stamping of stainless steel and other high-alloy steels currently primarily utilize high levels of chlorinated paraffins or chlorinated paraffins with sulfurized fat additives. According to a report by the International Agency for Research on Cancer, chlorinated paraffins are classified as a Class 2B carcinogen. The national standard "Limits and Determination Methods for Hazardous Substances in Metalworking Fluids" lists short-chain chlorinated paraffins as prohibited and medium- and long-chain chlorinated paraffins as restricted. Furthermore, chlorinated paraffins can corrode the metal surface during harsh processing, a phenomenon that is unavoidable even for stainless steel.

[0003] The document "Application Status and Development Trends of Stamping and Deep Drawing Lubricants" (Tang Bo et al., China High-Tech) introduces a composite additive based on a high-molecular-weight polyphosphate ester, which exhibits excellent lubrication properties and successfully replaces chlorine-sulfur-containing lubricants for deep drawing, drawing, and precision stamping of stainless steel and other high-alloy steels. However, stamping and deep drawing lubricants require degreasing after processing, which produces phosphorus-containing wastewater. Since this high-molecular-weight polyphosphate ester is a water-soluble additive, rapid phosphorus removal through demulsification is extremely difficult, increasing the difficulty of subsequent water treatment processes. This can lead to environmental health issues such as eutrophication, algal blooms, red tides, water pollution, and skin diseases.

[0004] In the deep drawing, drawing and precision stamping applications of stainless steel and alloy steel, the stamping oil is required to have higher lubrication performance and moisture and heat resistance, but the existing technology cannot meet these requirements. Summary of the Invention

[0005] In response to the above-mentioned problems existing in the prior art, the present invention provides a new stamping oil, which does not contain chlorine and phosphorus elements that are prone to cause environmental health problems, and has excellent lubrication properties and moisture and heat stability. At the same time, it can meet the deep drawing, drawing and precision stamping of stainless steel and some other high-alloy steel materials.

[0006] The first aspect of the present invention provides a stamping oil comprising the following components in parts by weight:

[0007] a) 75-90 parts of an oiliness agent;

[0008] b) 6 to 12 parts of extreme pressure agent;

[0009] d) 1 to 10 parts of a rust inhibitor;

[0010] Wherein, the oiliness agent is selected from at least two ester-type oiliness agents; the extreme pressure agent is selected from at least two sulfur-containing extreme pressure agents; and the rust inhibitor is selected from sulfonate rust inhibitors.

[0011] According to some embodiments of the punching oil of the present invention, preferably, the punching oil comprises the following components in parts by weight:

[0012] a) 80-90 parts of an oiliness agent;

[0013] b) 6 to 10 parts of extreme pressure agent;

[0014] d) 1 to 8 parts of a rust inhibitor.

[0015] According to some embodiments of the stamping oil of the present invention, preferably, the ester-type oiliness agent is selected from at least two of polymer polyester, oxidized rapeseed oil, palm oil and rapeseed oil.

[0016] According to some embodiments of the stamping oil of the present invention, preferably, the molecular weight of the high molecular weight polyester is 50,000 to 100,000.

[0017] According to some embodiments of the punching oil of the present invention, preferably, the kinematic viscosity of the high molecular weight polyester at 40°C is 1500-3500 mm 2 ·s -1 .

[0018] According to some embodiments of the stamping oil according to the present invention, the polymer polyester is preferably selected from at least one of polymer polyester GY10, polymer polyester priolube 1929, polymer polyester CE1800, polymer polyester LUB1225, and polymer polyester LB626. In the present invention, the polymer polyester can be obtained commercially, for example, but not limited to: polymer polyester GY10, commercially available from Lubrizol Additives; polymer polyester priolube 1929, commercially available from Croda Chemicals; polymer polyester CE1800, commercially available from Croda Chemicals; polymer polyester LUB1225, commercially available from Shanghai Yucheng Chemical Co., Ltd.; and polymer polyester LB626, commercially available from Shanghai Hongze Chemical Co., Ltd.

[0019] According to some embodiments of the stamping oil of the present invention, preferably, the sulfur-containing extreme pressure agent is selected from at least two of sulfurized fatty acid esters, sulfurized olefins, sulfurized cottonseed oil and overbased nano calcium sulfonate.

[0020] According to some embodiments of the stamping oil of the present invention, preferably, the sulfur content of the sulfur-containing extreme pressure agent is 10 wt % to 40 wt %.

[0021] According to some embodiments of the stamping oil of the present invention, preferably, the sulfur-containing extreme pressure agent includes a first sulfur-containing extreme pressure agent and a second sulfur-containing extreme pressure agent, wherein the first sulfur-containing extreme pressure agent is high-base nano-calcium sulfonate, and the second sulfur-containing extreme pressure agent is selected from at least one of sulfurized fatty acid esters, sulfurized olefins and sulfurized cottonseed oil.

[0022] According to some embodiments of the stamping oil of the present invention, preferably, the weight ratio of the first sulfur-containing extreme pressure agent to the second sulfur-containing extreme pressure agent is 1:2-5.

[0023] According to some embodiments of the stamping oil of the present invention, the sulfurized fatty acid ester is preferably selected from at least one of sulfurized fatty acid ester MD18, sulfurized fatty acid ester smartbase2518, and sulfurized fatty acid ester RC2317. In the present invention, the sulfurized fatty acid ester can be obtained commercially. Examples include, but are not limited to, sulfurized fatty acid ester MD18, commercially available from DOG, Germany; sulfurized fatty acid ester Smartbase2518, commercially available from Smart Chemical; and sulfurized fatty acid ester RC2317, commercially available from Rhein Chemie.

[0024] According to some embodiments of the stamping oil of the present invention, the olefin sulfide is preferably selected from at least one of olefin sulfide GS440L, olefin sulfide RC2540, and olefin sulfide LZ5340. In the present invention, the olefin sulfide can be obtained commercially. Examples include, but are not limited to, olefin sulfide GS440L, available from DIC Corporation of Japan; olefin sulfide RC2540, available from Rhein Chemie; and olefin sulfide LZ5340, available from Lubrizol Corporation.

[0025] According to some embodiments of the punching oil of the present invention, preferably, the sulfurized cottonseed oil is selected from sulfurized cottonseed T404. In the present invention, sulfurized cottonseed oil can be obtained commercially, for example but not limited to: sulfurized cottonseed T404, commercially available from Jinzhou Antai Lubricant Additive Co., Ltd.

[0026] According to some embodiments of the stamping oil of the present invention, the overbased nano-calcium sulfonate is preferably selected from at least one of overbased nano-calcium sulfonate EP140, overbased nano-calcium sulfonate T106D, overbased nano-calcium sulfonate LZ5283C, and overbased nano-calcium sulfonate H621. In the present invention, the overbased nano-calcium sulfonate can be obtained commercially. Examples include, but are not limited to, overbased nano-calcium sulfonate EP140, available from Shanghai Hongze Chemical Co., Ltd.; overbased nano-calcium sulfonate LZ5283C, available from Lubrizol; overbased nano-calcium sulfonate H621, available from Afton Chemical; and overbased nano-calcium sulfonate T106D, available from Liaoning Tianhe Fine Chemical Co., Ltd.

[0027] According to some embodiments of the stamping oil of the present invention, the sulfonate rust inhibitor is preferably selected from at least one of calcium sulfonate, sodium sulfonate, and barium sulfonate; more preferably, at least one of T701, T702, and T705. In the present invention, the sulfonate rust inhibitor can be commercially obtained, for example but not limited to: T701, T702, and T705, available from Suzhou Sanli Specialty Additives Co., Ltd.

[0028] A second aspect of the present invention provides a method for preparing the stamping oil, comprising: mixing an oiliness agent, an extreme pressure agent, and a rust inhibitor.

[0029] According to some embodiments of the preparation method of the present invention, preferably, the mixing conditions include: a temperature of 55 to 65° C. and a time of 1 to 2 hours.

[0030] A third aspect of the present invention provides the use of the aforementioned stamping oil or the aforementioned preparation method in deep drawing, drawing, and precision stamping of stainless steel and high-alloy steel, wherein high-alloy steel refers to steel having an alloy content greater than 10% by weight.

[0031] Beneficial effects of the present invention:

[0032] (1) The stamping oil of the present invention uses at least two ester-type oiliness agents as base oils; uses at least two sulfur-containing extreme pressure agents. Preferably, the sulfur-containing extreme pressure agents include a first sulfur-containing extreme pressure agent and a second sulfur-containing extreme pressure agent, wherein the first sulfur-containing extreme pressure agent is high-base nano-calcium sulfonate, and the second sulfur-containing extreme pressure agent is selected from at least one of sulfurized fatty acid esters, sulfurized olefins, and sulfurized cottonseed oil, which can meet the deep drawing, drawing and precision stamping requirements of stainless steel and other high-alloy steel materials.

[0033] (2) The punching oil of the present invention does not use chlorinated paraffin as an extreme pressure agent, thereby avoiding problems such as workpiece corrosion and carcinogenic potential caused by chlorinated paraffin.

[0034] (3) The punching oil of the present invention does not use water-soluble phosphorus-containing extreme pressure agents, thereby avoiding difficulties in the subsequent demulsification and phosphorus removal process, thereby avoiding the risk of causing water pollution.

[0035] (4) The punching oil of the present invention does not use mineral oil as the base oil. Instead, a large amount of animal and vegetable oils (ester-type oiliness agents) such as high-molecular polymer esters and oxidized rapeseed oil are added as the oiliness agent, and the oiliness agent serves as a carrier for other additives, playing the role of the base oil and preventing the solubility problem. DETAILED DESCRIPTION

[0036] In order to make the present invention easier to understand, the present invention will be described in detail below with reference to embodiments. These embodiments are only for illustration and do not limit the scope of application of the present invention.

[0037] In the present invention,

[0038] (1) GY10, high molecular weight polyester, molecular weight about 70,000, kinematic viscosity at 40°C about 2500 mm 2 ·s -1 , commercially available from Lubrizol Additives.

[0039] (2) Priolube 1929, high molecular weight polyester, molecular weight about 70,000, kinematic viscosity at 40°C about 1700 mm 2 ·s -1 , purchased from Croda Chemicals Co., Ltd.

[0040] (3) CE1800, high molecular weight polyester, molecular weight about 70,000, kinematic viscosity about 1800 mm at 40°C 2 ·s -1 , purchased from Croda Chemicals Co., Ltd.

[0041] (4)LUB1225, high molecular weight polyester, kinematic viscosity at 40°C is about 2500 mm 2 ·s -1 , purchased from Shanghai Yucheng Chemical Co., Ltd.

[0042] (5)LUB626, high molecular weight polyester, kinematic viscosity at 40°C is about 3000 mm 2 ·s -1 , purchased from Shanghai Hongze Chemical Co., Ltd.

[0043] (6) MD18, sulfurized fatty acid ester, sulfur content about 18% by weight, purchased from DOG, Germany.

[0044] (7) Smartbase 2518, sulfurized fatty acid ester, sulfur content about 18% by weight, commercially available from Smart Chemical Company.

[0045] (8) RC2317, sulfurized fatty acid ester, sulfur content about 17% by weight, commercially available from Rhein Chemie.

[0046] (9) T404, sulfurized cottonseed oil, sulfur content about 40% by weight, purchased from Jinzhou Antai Lubricant Additive Co., Ltd.

[0047] (10) GS440L, sulfurized olefin, sulfur content about 40 wt%, commercially available from DIC Corporation of Japan.

[0048] (11) RC2540, a sulfurized olefin with a sulfur content of about 40% by weight, commercially available from Rhein Chemie.

[0049] (12) LZ5340, a sulfurized olefin with a sulfur content of about 40% by weight, commercially available from Lubrizol Corporation.

[0050] (13) EP140, high base value nano calcium sulfonate, calcium content of about 15% by weight, purchased from Shanghai Hongze Chemical Co., Ltd.

[0051] (14) LZ5283C, high base number nano calcium sulfonate, calcium content of about 15% by weight, commercially available from Lubrizol Corporation.

[0052] (15) H621, high base value nano calcium sulfonate, calcium content of about 15% by weight, commercially available from Afton Chemical.

[0053] (16) T106D, high base value nano calcium sulfonate, calcium content of about 16% by weight, purchased from Liaoning Tianhe Fine Chemical Co., Ltd.

[0054] (17) T701, T702, and T705 are all sulfonate rust inhibitors purchased from Suzhou Sanli Special Additives Co., Ltd.

[0055] (18) PE1080, phosphate ester, purchased from Shanghai Guanzhong Petrochemical Co., Ltd.

[0056] (19) SLN111, sulfurized lard, sulfur content about 11%, purchased from DIC Corporation of Japan.

[0057] [Examples 1-8]

[0058] A stamping oil, the components and weight parts of which are shown in Table 1.

[0059] The preparation method is as follows: mixing an oiliness agent, an extreme pressure agent and a rust inhibitor at 60° C. for 2 hours to obtain stamping oil.

[0060] [Comparative Examples 1-7]

[0061] A stamping oil, the components and weight parts of which are shown in Table 1.

[0062] The preparation method is as follows: mixing an oiliness agent, an extreme pressure agent and a rust inhibitor at 60° C. for 2 hours to obtain stamping oil.

[0063] Table 1. Components and weight parts of Examples 1-8 and Comparative Examples 1-7

[0064]

[0065] Test Example

[0066] The performance tests of the stamping oils of Examples 1-8 and Comparative Examples 1-7 were carried out respectively, and the results are shown in Table 2, wherein:

[0067] (1) The test methods for PB(N) and PD(N) are in accordance with GB / T3142.

[0068] (2) The wear spot diameter is tested according to SH / T 0189.

[0069] (3) The test method of the damp heat test is carried out in accordance with GB / T2361.

[0070] Table 2. Performance test results of stamping oils of Examples 1-8 and Comparative Examples 1-7

[0071] Example No. PB(N) PD(N) Wear spot diameter (mm) Damp heat test (h) Example 1 1294 7845 0.46 144 Example 2 1363 7845 0.39 192 Example 3 1363 7845 0.40 168 Example 4 1294 7845 0.43 120 Example 5 1118 6080 0.55 96 Example 6 1363 4903 0.38 120 Example 7 1363 3089 0.35 144 Example 8 1069 7845 0.65 48 Comparative Example 1 1069 7845 0.75 120 Comparative Example 2 981 7845 0.69 192 Comparative Example 3 1069 7845 0.83 144 Comparative Example 4 1363 3923 0.42 144 Comparative Example 5 883 7845 0.59 120 Comparative Example 6 588 1961 0.98 72 Comparative Example 7 1363 7845 0.38 48

[0072] As can be seen from Table 2, the test data of preferred Examples 1-4 of the present invention show sufficiently high PB and PD, while the wear spot diameter is sufficiently small, and the wet heat test time is relatively long, which can meet the deep drawing, drawing, and precision stamping requirements of stainless steel and other high-alloy steel materials. Examples 5-8 are stamping oils obtained under conditions other than the optimal conditions for the extreme pressure agent, and their performance is not as good as that of Examples 1-4 under the optimal conditions. Comparative Examples 1-3 have problems with low PB and large wear spots, Comparative Example 4 has a problem with low PD, Comparative Example 5 has a problem with low PB and large wear spots, Comparative Example 6 has problems with low PB and PD, large wear spots, and a short wet heat test, and Comparative Example 7 has a problem with a short wet heat test.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, under the technical enlightenment provided by the present invention, as common knowledge in the art, other equivalent variations and improvements can be made, which should also be considered as the scope of protection of the present invention.

Claims

1. A stamping oil comprising the following components in parts by weight: a) 75-90 parts of an oiliness agent; b) 6 to 12 parts of extreme pressure agent; d) 1 to 10 parts of a rust inhibitor; in, The oiliness agent is selected from at least two ester-type oiliness agents; the extreme pressure agent is selected from at least two sulfur-containing extreme pressure agents; the rust inhibitor is selected from sulfonate rust inhibitors; The ester type oiliness agent is selected from at least two of polymer polyester, oxidized rapeseed oil and palm oil; The polymer polyester is selected from at least one of polymer polyester GY10, polymer polyester priolube1929, polymer polyester CE1800, polymer polyester LUB1225 and polymer polyester LB626; The sulfur-containing extreme pressure agent consists of a first sulfur-containing extreme pressure agent and a second sulfur-containing extreme pressure agent, wherein the first sulfur-containing extreme pressure agent is high-base nano-calcium sulfonate, and the second sulfur-containing extreme pressure agent is selected from at least one of sulfurized fatty acid esters, sulfurized olefins, and sulfurized cottonseed oil.

2. The punching oil according to claim 1, characterized in that Calculated by weight, it includes the following components: a) 80-90 parts of an oiliness agent; b) 6 to 10 parts of extreme pressure agent; d) 1 to 8 parts of a rust inhibitor.

3. The punching oil according to claim 1 or 2, characterized in that: The molecular weight of the high molecular weight polyester is 50,000 to 100,000.

4. The punching oil according to claim 1 or 2, characterized in that: The kinematic viscosity of the high molecular weight polyester at 40°C is 1500-3500 mm 2 ·s -1 .

5. The punching oil according to claim 1 or 2, characterized in that: The sulfur content of the sulfur-containing extreme pressure agent is 10% to 40% by weight.

6. The punching oil according to claim 1 or 2, characterized in that: The weight ratio of the first sulfur-containing extreme pressure agent to the second sulfur-containing extreme pressure agent is 1:2-5.

7. The punching oil according to claim 1 or 2, characterized in that: The sulfonated fatty acid ester is selected from at least one of sulfonated fatty acid ester MD18, sulfonated fatty acid ester smartbase2518 and sulfonated fatty acid ester RC2317.

8. The punching oil according to claim 1 or 2, characterized in that: The sulfurized olefin is selected from at least one of sulfurized olefin GS440L, sulfurized olefin RC2540 and sulfurized olefin LZ5340.

9. The punching oil according to claim 1 or 2, characterized in that: The sulfurized cottonseed oil is selected from sulfurized cottonseed T404.

10. The punching oil according to claim 1 or 2, characterized in that: The high base value nano calcium sulfonate is selected from at least one of high base value nano calcium sulfonate EP140, high base value nano calcium sulfonate T106D, high base value nano calcium sulfonate LZ5283C and high base value nano calcium sulfonate H621.

11. The punching oil according to claim 1 or 2, characterized in that: The sulfonate rust inhibitor is selected from at least one of calcium sulfonate, sodium sulfonate and barium sulfonate.

12. The punching oil according to claim 11, characterized in that The sulfonate rust inhibitor is selected from at least one of T701, T702 and T705.

13. The method for preparing the punching oil according to any one of claims 1 to 12, comprising: Mix the oiliness agent, extreme pressure agent and rust inhibitor.

14. The preparation method according to claim 13, characterized in that The mixing conditions include: temperature of 55-65° C. and time of 1-2 hours.

15. Use of the stamping oil according to any one of claims 1 to 12 or the preparation method according to claim 13 or 14 in deep drawing, drawing and precision stamping of stainless steel and high alloy steel.

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