DD250133A1 - LUBRICANTS AND COOLANT FOR SPANLESS METAL WORKING - Google Patents

Abstract

The invention relates to a lubricating and cooling means for the non-cutting shaping of copper and its alloys in the final dimensions up to 0.012 mm. The invention has for its object to find material compositions for a lubricating and cooling agent, which ensures high production speeds under the conditions of highly automated shaping process. This requires a cooling lubricant system that ensures clean forming zones free of adhesive lubricant deposits and metal abrasion, that is biologically resistant, anticorrosive, and that lasts for 8-12 months. According to the invention, the object is achieved by providing an active ingredient combination of the constituents 25-32 * water; 19-21 * triethanolamine; 19-21 * Glycols or glycol mixtures; * * Sodium salt of sulfated butyl maleate and / or a mixture of unsaturated alkyl sulfates and alkyl sulfonates; 9-11 * a mixture of Alkylphenylpolyglykolethern with degree of ethoxylation 3-6 and 7-10; 14-20 * n paraffinsulfamide acetic acid sodium. The application mixture with water contains 0.5-15.0 * of the active ingredient combination.

Description

Fields of application of the invention

The invention relates to a lubricant and coolant for non-cutting shaping of metals, in particular for rolling and drawing, and combinations thereof for processing copper and copper alloys in final dimensions up to 0.012 mm.

Characteristic of the known technical solution

It is known that oil-in-water emulsions, water-emulsified drawing fats and soap solutions are used, for example, for drawing copper and copper alloys as lubricants and coolants, and as metal debris transporting media from the forming zone, for example, Patent Nos. OS 1929752 (USA) ₁ OS 2330806 (FRG), OS 2504115 (USA), OS 2844272 (Sweden), OS 2844272 (FRG).

They have the tasks to reduce the forming work and wire tension by reducing the friction between the drawing tool and wire, dissipate the forming heat and abrasion and to increase the service life of the technology used.

A disadvantage of the known systems consisting of hydrophobic components such as hydrocarbons, natural fats and oils, synthetic esters, fatty acids and soaps and hydrophilic components such as organic sulfates and sulfonates, soaps and fatty acids, the forming 2 phases water / oil, the in discontinuities of the pulling agent at application concentration in particle size ranges of 0.100-0.002 mm lead. This causes changing friction conditions in the draw, which cause wire breaks in the fine and fine rod measurement range.

To achieve high wire drawing speeds, fine and ultrafine wire drawing at low wire count, the bonding of the wire is adversely affected by the use of conventional wire drawing means on the power take-up pulleys

The causes of sticking are mainly in the two-phase structure of Ziehhmittei, which lead to deposits of soaps, oils, fats associated with metal abrasion on the wire guide elements and before Ziehol. In the engine room, sticky and difficult to remove sludges form. These adversely affect the paintability of the wire.

The known technical solutions of the lubricant and coolant systems react to the mechanical, chemical and biological factors of influence with material changes, which allow only service lives of 1 to 3 months.

Object of the invention

The aim of the invention is a lubricant and coolant with high chemical, mechanical and biological stability for the non-cutting shaping of metals, which ensures in particular for the drawing of copper and copper alloys in the fine and Feinstdrahtbereich minimal wire stresses.

Explanation of the essence of the invention

The lubricating and cooling agent according to the invention should be so constructed that, at the dilution with water concentration, it has, as far as possible, continuity of the internal phase instead of the known discontinuity of the oil phase of conventional lubricants and coolants, and the water phase to maximum lubricating effect up to the micro-ranges the forming zone activated.

It has been found that such a lubricant and coolant by the defined active ingredient combination of glycols triethanolamine, Alkylphenylpolyglykoläthem, alkylpolyglycol ethers and / or alkali metal salts of sulfatiertenölsäurebutylestem, n-Paraffinsulfanidessigsaurem sodium and water. The lubricant and coolant according to the invention is composed of water-miscible individual components which are combined so that a homogeneous concentrate is obtained with a minimum water content.

The lubricant and coolant forms on the metallic material to be formed a uniform closed and stable lubricating film, which consists only of the active ingredient components and displaces the water phase from the micro-regions of the forming zone.

This film formation is achieved because the lubricant and coolant according to the invention is free of mineral oil, natural fats and oils and conventional EP additives. It contains only interface-active components with capillary action, which promote film formation and cause very good wear-carrying capacity. The lubricating and cooling agent according to the invention exhibits complete continuity of the internal phase at 1000 times magnification in the transmitted-light microscope at the application concentration.

The lubricant and coolant according to the invention causes a significant reduction in the frictional forces and wear processes in the forming zone.

Expression for this is z. As the reduction of the particle sizes of the metal abrasion of 0.010mm in conventional lubricants and coolants to an average of 0.001 mm.

Ensuring a stable pH of 8.0-9.5 causes the resistance of the lubricant and coolant according to the invention in application concentrations against material changes due to mechanical, chemical and biological influences and enables service lives of 8-12 months.

embodiments example 1

Lubricants and coolants for drawing fine and super fine wires of copper and copper alloys on highly automated single and multi-wire drawing machines in the concentration of 0,5-2% in water with the composition: 31,0% water 20,0% triethanolamine 20, 0% monoethylengiykol

2.2% sodium salt of sulfated oleic acid butyl ester

5.0% alkylphenyl polyglycol ether degree of oxydation 3-6

4.8% alkylphenyl polyglycol ether degree of oxyethylation 7-10 17.0% n-paraffinsulfamide-acetic acid sodium

Example 2

Lubricant and coolant for rolling and drawing copper and copper alloy flat wire on combined drawing-rolling equipment in the concentration of 8-15% in water of composition 30.0% water

20.0% triethanolamine

21.0% monoethylenglycol and propylene glycol in the ratio 1: 1

2.5% mixture of unsaturated alkyl sulfates with alkyl sulfonate and sodium salt of sulfated oleic acid butyl ester in a ratio of 1: 1

4.5% alkyl phenyl polyglycol ether degree of oxydation 3-6

4.5% alkylphenyl polyglycol ether degree of oxyethylation 7-10 17.5% n-paraffin sulfamic acid sodium

Bet game 3

Lubricant and coolant for cold rolling of strips and foils of dimensions <3mm from copper and copper alloys in the concentration of 3-10% in water with the composition: 25.0% water 21.0% triethanolamine 2t, 0% propylene glycol

2.5% mixture of unsaturated alkyl sulfates and alkyl sulfonate, -.-.-

5.5% alkyl phenyl polyglycol ether degree of oxydation 3-6

5 _v 0% degree of oxyethylation Afkylphenylpolyglykoläther 7-10 20.0% sodium n-Paraffinsulfamidessigsaures

Claims (7)

1. lubricants and coolants for the non-cutting shaping of metals, in particular for the drawing of copper and its alloys, characterized in that an active ingredient combination consisting of 25-32% water
19-21% triethanolamine
19-21% glycols or glycol mixtures 20-25% sodium salt of sulfated oleic acid butyl ester and / or a mixture of unsaturated alkyl sulfates and alkyl sulfonate 9-11% of a mixture of Alkylphenylpolyglykoläthern with degree of ethoxylation 3-6 and 7-10 14-20% η Paraffinsulfamidessigsauresodium
is used as a 0.5-15% mixture with water. 2. Lubricant and coolant Punkti, characterized in that the lubricating effect is achieved exclusively by a combination of components with interface and capillary active mechanisms and the use of conventional friction and wear-reducing agents, such as mineral oils, natural fats and oils and EP additives are not required. 3. Lubricant and coolant Punkti, characterized in that water-miscible individual components are combined so that a homogeneous concentrate is obtained with a minimum amount of water. 4. Lubricant and coolant according to item 1, characterized in that is preferably used as the glycol monoethylene glycol and / or propylene glycol. 5. lubricants and coolants according to item 1, characterized in that in the application concentration of a transmitted light microscope at 1 000 times magnification complete continuity of the inner phase is present. 6. Lubricant and coolant according to item 1, characterized in that forms a uniform closed and stable lubricating film on the metallic material to be formed, which consists only of the active ingredient components and displaces the water phase from the micro-regions of the forming zone. 7. Lubricant and coolant according to item 1, characterized in that up to a service life of 8-12 months, the formation of the closed stable lubricating film of constant composition is ensured in accordance with the active ingredient combination.