SU734248A1 - Cutting fluid for metal treatment by smoothing - Google Patents

Description

The invention relates to compositions of lubricants, more precisely to lubricating and cooling liquids based on mineral oils with additives, and is intended for use in smoothing the surfaces of parts made of high-strength metallic materials with carbide tools. volume and tools made of artificial highly hard materials: diamonds, sapphires, rubies, for example, for smoothing the necks of motor and tractor engine shafts. It is known to use the surface smoothing of metal parts of machines mineralBK oils as lubricating coolants, for example, industrial oil IS-20, GOST 3875-62 1. A disadvantage of the known oil is that if it is used for smoothing surfaces of parts from high-strength hundred Leu observed low (no more than e-6 min) tool life. A known coolant (B-35) for mechanical treatment of metals based on mineral oil, chlorinated paraffin, Zinc alkyl dithiophosphate of zinc, calcium polyols and calcium sulfonate and diproxide; 2 The disadvantage of this coolant is that when it is applied when smoothing the surfaces of metal parts, the tool life is low (within 20-25 minutes), which negatively affects the performance of the smoothing process. In addition, due to the high temperatures (400700 ° C) in the zone of contact of the tool and part, the use of coolant B-35 is accompanied by abundant Iemission of gaseous products with an unpleasant odor that pollutes the atmosphere. Therefore, the aforementioned disadvantages of coolant make it unsuitable for high-speed smoothing. The aim of the invention is to increase the durability of the tool used when smoothing the surfaces of metal parts and made of (artificial highly hard materials, the goal is achieved by the fact that the coolant

mineral oil, chlorinated paraffin, dialkyl thiophosphate, zinc polyzole calcium sulfonate and diproxide are additionally containing chlorosulfide. X.1CUPC oil, chlorinated stearic acid, high molecular weight alcohols of C, -C fraction, and secondary monoalkylamine with C, -C, in the alkyl radical , while all components are taken in the following ratios, wt.%:

Chlorinated paraffin (chloroparaffin) 23-27 Zinc dialkyldithiophosphate4.5-5.5

Calcium polyzole sulfonate 4.7-5.3

Diproxide2,7-3,3

Cotton oil chlorosulfide19.0-21.0 Chlorinated stearic acid 4.5-5.5 High molecular weight alcohols fraction Cr-Cjg 2.4-2.6 Secondary monoalkylamine (CIQ -Cjn in the alkyl radical) 4.3-4.7 Mineral oil . Up to 100 Phenolic oil can be used as a mineral oil, chlorine paraffin with 40% chlorine content and chlorinated stearic acid with 38-39% chlorine content are used in the liquid composition.

 Cotton oil chlorosulfide, chlorinated stearic acid and chloroparaffin, being surface active substances, contribute to a significant reduction of friction forces in the zone of contact of the instrument with the part. Cyproxide, Dialkyl dithiophosphate reduces the likelihood of a bully tool. Calcium polyzole sulphonate improves the anti-corrosion properties of liquid, and high molecular weight alcohol increases its penetration ability. Secondary monoalkylamine, having high absorption properties,. reduces the evaporation of degradation products in the area of contact of the tool with the part; Mineral phenolic selective cleaning oil, provides sufficiently greater compressive strength and ease of movement in the direction of tangential smoothing forces, as well as reduce the adhesion component of the fatigue factor; 1 and friction and facilitate plasticization of the surface detail layer.

A coolant is obtained by mixing its components in the base at 40-70 ° C in a sequence. Acid additives (cottonseed chlorosulfide, diproxyl, chloroparaffin, chlorinated stearic acid, Dialkyl dithiophosphate) are mixed first to obtain a homogeneous Clear liquid, then the high molecular weight alcohols of the fraction 2, the multi-ash calcium sulfonate and the secondary monoalkylamine are sequentially introduced

The finished cutting fluid has the following physical and chemical properties: Q Kinematic viscosity at

 Not below 18

density at 1,000-1,050 The number of saponification,

mg KOH / Gn below 130

Flash point in an open crucible, s Not lower than 150 Content of injected chlorine, wt.% Not less than 12.5 Q Water content,

weight,% Absence

The content of introduced sulfur, wt.% 3.0-3.5

Corrosion test on steel plate

45 and gray iron withstands. In the table, 1 shows the compositions of the proposed coolant. 0 (coolant), used for smoothing fillets and necks of the crankshafts of automobiles and tractor trunnions,

 comparative studies of the proposed formulations 1-1., 3 known B-35 and industrial oil (EC-20) were carried out. The tests of coolant were carried out on a 1kb2 screw-cutting lathe using a special spring-mounted Derzhavka. Smoothing modes40: force 80-70 kgf, radius of the working part of the tool 3.5-5 mm, feed 0.07-0.11 mm / rev, smoothing speed 40-70 m / min.

The results of testing coolant when smoothing the hinge pin of the tractor MTZ-50 are shown in Table 2,

The results of the test for smoothing the crankshaft of the YaLS-204 engine are shown in Table 3. 50

As can be seen from the table, 2-3 proposed - coolant provides an increase in tool life, productivity, improves the quality of the surface 55.

Thus, the use of a lubricant-cooling liquid of the proposed composition increases the durability of the tool by 1.5-5.0 times, increases productivity by 12-15% and increases

quality of the treated surfaces (by 1-2 bits of cleanliness), thus improving. sanitary and hygienic conditions in the workplace.

Table

IS-20510

B-35395

1375

2380

3360

table 2

Table

Claims (2)

Invention Formula Lubricating coolant for processing metals by smoothing on the basis of millialral oil, chlorinated paraffin, zinc dialkyldithiophosphate, multi-ash sulphonate. calcium and diproxide, characterized in that, in order to increase tool life, the liquid additionally contains cottonseed oil chlorsulfide, chlorinated stearic acid, high molecular weight alcohols fraction) 2 secondary monoalkylamine with C, Q-Ssch in the alkyl radical, with the following content of components, weight.%; Chlorinated paraffin .23-27 Zinc alkydithiophosphate4,5-5,5 Calcium polyzole sulfonate 4.7-5.3 Cyproxide 2.7-3.3 Cotton oil chlorsulfide 19.0-21.0 Chlorinated stearic acid4.5-5.5 High molecular weight alcohols of the Su-0.2 2.4-2.6 fraction Secondary MONOSHKILamin (Garden –C | h in the alkyl radical) 4.3-4.7 Mineral oil Up to 100. Sources of information taken into account during the examination 1. V. Torbilo, Diamond Smoothing. Sb.Novye machining processes, M., Mashinostroenie, 1968, 2. USSR author's certificate 4.63696, c. 10 M 1/30, 1973 0 (prototype).