SU891759A1 - Cutting fluid for mechanical working of metals - Google Patents

Description

(54) LUBRICATING COOLING MECHANICAL LIQUID The invention relates to the field of metalworking, in particular, to coolants (mechanical coolant) for machining metal and can be used on manufacturing high-precision products. Coolant compositions for mechanical treatment of metals containing water, sodium nitrite, soda ash and glycerin are known. However, such coolant systems form a deposit of salts on the working parts of the equipment, cause corrosion of ferrous and non-ferrous metals, and do not meet modern requirements for the quality of processed products. With diamond abrasive machining, the use of these coolant leads to intensive wear of the grinding tool and the deterioration of the surface roughness of the machined 1P) 1x parts. Also known is a coolant for mechanical treatment of metal, water containing metal, sodium nitrite, and calcining soda. The technical bath, trisodium phosphate and triethanol in t2j. However, the known coolant has insufficient protective properties and low bearing and wet ability under conditions of direct contact between the tool and the part, which affects especially the finishing abrasive operations, the possibility of rhythmic removal of sludge from the treatment area. Inadequate carrying capacity of the fluid leads to pre-modern blunting and clogging of the tool, an increase in friction force and cutting power in the contact zone of the tool and part. As a result, the quality of the surface to be treated does not satisfy the requirements. The purpose of the invention is to increase the tool life and the quality of the surface to be processed.

This goal is achieved by the fact that a cooling fluid containing water, sodium nitrite, soda ash and triethanolamine, additionally contains dextrin and polyethylene glycol in the following ratio of components. everything.%:

Soda Ash 0.2-0.5

0., 2-0,5 0,5-2,0

ol 0.5-1.0 0.5-1.0 Else

All ingredients are dissolved in the required amount of water to prepare an EOS.

The compositions of the coolant are given in table.1.

Table 1

Comparative tests were carried out on a superfinishing machine during machining of a roller of 31 mm diameter with a grinding bar 63M14 MZKL with a 35Ke grinding wheel. 70 mm long under the following conditions: Part rotation frequency,. rpm6040

Claims (2)

2.5 60 Pressure, kg / cm The amplitude of oscillation, mm Processing time, with Test results of the known and proposed coolant are given in table 2. Table 2 5 Test data for lubricant cooling liquids show that the proposed coolant is more effective than the known one. The productivity increases by 1.2-1.3 times the consumption of the grinding tool is reduced by 1.2-1.3 times. The use of the proposed coolant allows improving the quality of the treated surface by reducing the roughness of the treated surface by 10%. Claims A lubricant for machining metals containing water, sodium nitrite, soda ash and triethanolamine, characterized in that, in order to increase the durability of the tool. of the processed surface, it additionally contains dextrin and polyethylene glycol at the following ratio of components, wt.%: Soda ash 0.2-0.5 Sodium nitrite 0.2-0.5 Dextrin 0.5-2.0 Polyethylene glycol 0.5 -1.0 Triztanolamin 0,5-1,0 VodaEstalnoe Sources of information taken into account during the examination 1. Sadaghov K.I. et al. Lubrico-cooling liquid for diamond abrasive treatment of metals. Baku, ed. ELM 1980, p. 180. 2. USSR author's certificate No. 154353, cl. C 10 M 3/02, 1961 (prototype).