CS245095B1 - Wire drawing emulsion and strip rolling 1 2 - Google Patents

Abstract

The solution is in the field of lubricating and cooling emulsions applied in pulling drums and rolling strips. The present emulsion consists of 55 to 70 parts by volume of polypropylene, respectively. mineral oil; 5 to 15 parts by volume of vegetable oil;

Description

The solution belongs to the area of lubricating and cooling emulsions applied in pulling of wires and rolling of strips. The present emulsion consists of 55 to 70 parts by volume of polypropylene, respectively. mineral oil, up to 15 parts by volume vegetable oil, 20 to 30 parts by volume non-ionic oxyethylated fatty alcohol emulsifier, and 1 to 3 parts by volume triethanolamine diluted 1: 7 to 1: 27 with water.

It is an object of the present invention to provide an emulsion for pulling wires and rolling rods and pellet wires which eliminates the negative properties of the emulsions used hitherto.

When pulling copper and aluminum wires and rolling doubles in the production of enamelled wires and strips, as well as cables, suitable lubricating and cooling emulsions must be used to:

- to regulate the coefficient of friction in dies and rolling gaps, - to dissipate the heat generated by plastic deformation, - to dissipate the heat of the friction loss work, - to act as a cleaning agent or as a preservative. and

Pure mineral oils, pure vegetable oils with additives, oil-in-water oil emulsions, aqueous solutions of oily soaps and the like are used for this purpose. In order to ensure a uniform coating and fineness of the surface film formed, and last but not least, also from an ecomilical viewpoint, emulsion formulations are most frequently used.

The disadvantages of the emulsions used for drawing wires and rolling the strips on the basis of pure mineral resp. Synthetic oil in combination with emulsifiers is imperfect lubrication, short life, high foaming and facacity of wires and strips.

The disadvantage of using vegetable oils in combination with emulsifiers is that they are subject to autooxidation due to the content of unsaturated fatty acids, which is negatively reflected in emulsion stability and corrosive effects. Unlike mineral and synthetic oils, vegetable oils are often decomposed during annealing.

Due to efforts to utilize the nutritional value of vegetable oils, the use of pure vegetable oil emulsion formulations is not economical.

The above drawbacks are overcome by the proposed wire drawing and strip rolling emulsion based on a synergistic mixture of mineral or synthetic oil and vegetable oil with the addition of a suitable type of nonionic emulsifier and anticorrosive agent.

The present invention provides a wire drawing and strip rolling emulsion characterized in that it consists of 55 to 70 parts by volume of polypropylene oil having a relative molecular weight of 490 to 600, a density of 836 to 900 kg. m ^-3 , viscosity 200 to 700 m Pa. and / or mineral oil with a density of 850 to 905 kg. m ^-3 , viscosity 30 to 70 mPa. s, 5 to 15 parts by volume of rapeseed oil with a density of 910 to 930 kg. m ^-3 , viscosity 20 to 100 mPa. s, or rope oil with a density of 920 to 940 kg. m ^-3 and a viscosity of 37 to 70 mPa. s, 20 to 30 parts by volume of 2 to 6 moles of oxyethylated fatty alcohol ethylene oxide with an average C12 carbon chain length and 1 to 3 parts by volume of triethanolamine diluted with water in an olium ratio of -1: 5 'to 1: 40, preferably 1 The composition prepared according to the invention encapsulates the wires and strips with a good coating layer which ensures smoothness of the surface, good lubricity, sufficient heat dissipation, reduced wear of the dies and a lower overwhelming of the wires.

In the following, the method of preparing the wire drawing and strip rolling emulsion is exemplified without being limited to these types alone.

Example 1

Up to 65 L of polypropylene oil with a relative molecular weight of 510, a density of 838 kg. m ³ and viscosity 300 mPa. 5 liters of crude rapeseed oil with a density of 920 kg is poured. m ³ and viscosity 80 mPa. With vigorous stirring, 28 liters in diameter, 3 moles of oxyethylated fatty alcohol ethylene oxide with an average C12 carbon chain length and then 2 Γ triethanolamine are added successively. The concentrate thus prepared is diluted with demineralized water for individual drawing and rolling machines in a ratio of 1: 27 for fine strokes, so that the concentrate is poured into the water while stirring. The resulting emulsion is applied in a conventional manner. The guaranteed stability of the emulsion is months under normal operating conditions.

Example 2

As Example 1 except that instead of polypropylene oil having a relative molecular weight of 510, polypropylene oil with a relative molecular weight of 580, a density of 870 kg, is used. m ³ and a viscosity of 650 mPa. with.

Annex 1 and d 3

As Example 1 except that crude rope oil with a density of 930 kg is used as the vegetable oil. m- ³ and viscosity 46 mPa. with.

Example 4

15 L of crude fan oil is poured into 55 L of polypropylene oil having a molecular weight of 490-530. While stirring vigorously, 28 L of 3 moles of oxyethylated fatty alcohol ethylene oxide with an average length of the carbon chain of 12 C and then 2 L of triethanolamine are added successively. The concentrate is worked up as in Example 1 in a ratio of 1: 7 for thick-drawing.

Example 5

Alko Example 1 except that a higher fatty alcohol with an average C12 chain length oxyethylated on average 4.5 moles of ethylene oxide is used as emulsifier.

Example 6

As Example 1, instead of poly-

Claims (1)

An emulsion for drilling and strip rolling characterized in that it consists of 55 to 70 parts by volume of polypropylene oil with a relative molecular weight of 490 to 600, a density of 836 to 900 kg. m- ³ , viscosity 200 to 700 mPa. and / or mineral oil with a density of 850 to 905 kg. m ^-3 , viscosity 30 to 70 mPa. 5 to 15 parts by volume of rapeseed oil with a density of 910 to 930 kg. m- ³ , viscosity 20 to 100 mPa. of propylene oil will use refined mineral oil with a density of 880 kg. nr ³ and a viscosity of 57 mPa. with. VYNALEZU. s or rope oil with a density of 920 to 940 kg. m ^-3 and a viscosity of 37 to 70 mPa. s, 20 to 30 parts by volume of 2 to 6 moles of oxyethylated fatty alcohol ethylene oxide with an average C12 carbon chain length and 1 to 3 parts by volume of triethanolamine diluted with water in a volume ratio of 1: 5 to 1:40, preferably 1: 7 to 7 1: 27.