SU767181A1 - Cutting fluid for mechanical working of crystals - Google Patents

Description

The invention relates to the composition of lubricating fluids (coolant) for cutting, grinding, polymers and other types of processing of single-crystal and polycrystalline materials used in optics, microelectronics and radio engineering. Such materials include, for example, leucosapphire, ruby, orthoaluminate, garnet, etc.

Known compositions of lubricant-coolants, water-based Tee with the addition of various additives and antifriction filler 1,

However, this method cannot be applied as a coolant during cutting, grinding, polishing, etc. crystals, since the presence of antifreeze fillers (graphite, disulfide, molybdenum, fluorinated graphite) causes a clogging of the tool and, as a result, a sharp decrease in the productivity of crystal processing processes. In addition, the high viscosity of the composition impedes its delivery to the treatment zone.

The closest in composition to the present invention is an emulsol-based lubricating liquid based on emulsol, containing water, glycerin, sulfonic acids and sodium orthophosphate 12J.

However, this composition does not provide satisfactory cooling of parts and high processing efficiency of the process, its use necessitates

ten . S multiple editing tools and significantly reduces their service life.

The purpose of the invention is to reduce the processing time, to reduce the chiol of the edits of the tool, which increases the productivity of the processing of the crystals, and also to increase the durability of the tool.

The goal is achieved by the fact that a coolant based on an aqueous solution of glycerin additionally contains a copolymer of acrylic acid with g of hexa-ethylsaccharose (SAAC) or tetraallylpentaerythritol (CACAP) and potassium hydroxide or sodium in the following ratio of components, wt.%: I

Acrylic copolymer copolymer with hexaallyl saccharide or tetraallyl peptide, ntaerythritol. 0.05-0.7 Glycerin 0.05-0.5

Sodium or potassium hydroxide, 0.1-0.5

WaterUnder 100

Example

1, Prepare the composition, weight,%;

Copolymer of acrylic acid with hexaallylsaccharoi0,2

Sodium hydroxide 0.35 Glycerin. 0,25 WaterOther Leucosapphire is subjected to cutting and grinding on the plane. The time of cutting a boule on a plate with a total surface area of 100 s 7-8 min, the number of edits per tool 5-6. Grinding off plates with a sukoyarno surface area of 50 Å, O, 1 mm / min, the surface roughness falls into classes 869a, no tool editing is required.

Example 2, Preparing the composition, wt.% :,

copolymer of acrylic acid with tetrallylpentaerythritol 0.75 Sodium hydroxide 0.5 Glycerin 0.05

 WaterO (7T uibHoe

Orthoaluminate is subjected to polishing on the plane. When grinding plates with a total surface area of 50 mm, eat 0.2 mm / min, the surface roughness RELATED; to classes 8b-9a,

no tool editing required.

Example 3. Preparing the composition, wt.%;

Acrylic acid copolymer with tetraallylpentaerythritol0.05

Sodium hydroxide 0.1 Glycerin 0.5

WaterEverything

Pomegranate is subjected to cutting in the modes corresponding to example 1. The cutting time is 6-7 minutes, the number of edits per tool 4-5. When using potassium hydroxide instead of sodium in formulations, similar results were obtained.

The results of comparative tests of the listed compositions and known coolant are shown in the table. Known composition used in the form of a 5% emulsion.

The cutting of leucarsapfira was carried out on a K-811 machine, an ASC250 A200 / 160 tool, a concentration of 25% on a MI linkage, and the tool rotates at a speed of 3000 rpm.

Sapphire grinding

QUANTUM

diamond inna machine

ACP1 5 0x2 0x3 АСМ20 / 14, concentration of 50% on CPS. Processing modes: 2000 rpm, iEE 350 rpm, flow rate 0.03, 0.05 mm / min, spring pressure 35 kgf. Handle blocks with a diameter of 50 MMj composed of parts with a diameter of 16 mm.

As follows from the data in the table, the modification of the proposed formulations significantly increases the production and processing properties and antifrictional properties, resulting in increased tool durability.

11-12

pfir

Known composition of example 1

11-12

Iavestna Composition according to example 3

13-15 5-6 7-8

12-14 4-5 6-7

Sapphire

Known composition of example 1

Orthoaluminate

Claims (1)

The composition of Example 2 is known. Thus, the proposed lubricants based on SACAP and SAKAS can be used in cutting operations for grinding of crystals, as the tool service life is shortened, the cutting and grinding time is improved, the cooling of parts during processing is improved and the wear resistance is improved tool. Claims: Lubricating fluid for machining crystals based on an aqueous solution of glycerine, characterized in that, in order to increase the water content and wear resistance 8b-9b Not tre8b-9a were bored 8b-9a eb-9a There was no need for a tool, the liquid would additionally enclose a copolymer of acrylic acid hexaallyl saccharose or tetralylphentaerythritol and atri or potassium hydroxide at the next component content, weight ,. Glycerin0, Acrylic acid copolymer with hexaallyl-. sucrose or tetraallylpentaerythritol 0.05-0.75 Sodium or potassium hydroxide 0.1-0.5 Water DLO 100 Information sources taken into account during the examination 1, USSR Author's Certificate W 489781, C, C 10 M 3/26, 1974 2, TU-38-101174 / 71 (prototype).