SU825604A1 - Composition for vibrational grinding of aluminium alloy parts - Google Patents

Description

The invention relates to formulations intended. for processing parts made of aluminum alloys, and is recommended for use in mechanical engineering, instrument making and other industries in finishing operations. . Compositions are known for vibratory treatment of parts based on water with the addition of salts of metals, acids of surfactants, etc. The compositions are used in conjunction with abrasive fillers of various sizes l. A known composition for the vibratory treatment of parts made of carbon steels, containing dissolved in water, hydrochloric acid, nitric acid, thiourea, potassium, iron-synodide and surfactant. Rust thief is acceptable for vibration treatment of D3 carbon steels. However, it is not sufficiently effective for vibration grinding of aluminum alloy parts. In addition, the composition releases toxic gaseous compounds - hydrogen chloride, oxides of nitrogen. The closest in composition to the present invention is a composition for vibratory grinding of aluminum alloys, providing an aqueous solution of triethanolamine, sodium nitrite and an OP-10 emulsifier with the following content of components 3, g / l:. Triethanolamine Nitrite sodium 2.5. OP-101 Known composition has significant drawbacks. First of all, it is small enough for the vibration treatment of aluminum alloy parts due to low productivity and insufficient quality of the surfaces to be processed. In addition, the presence in the composition of a biologically rigid emulsifier OP-10 creates great difficulties in the disposal of flushing waste water. The purpose of the invention is to increase the productivity and quality of processing parts made of aluminum alloys. The goal is achieved by the fact that the composition for vibratory grinding of aluminum alloy parts based on sodium nitrite and tri-stanolamine additionally contains diethanolamine acid and abrasive powder for the components, Oleic acid, diethanolamine

Nitrite na.tri

Triethanolamine Abrasive Powder

In tab. 1 presents the proposed composition.

Table 1

diethanolGOST 4197-66 0.1 5

green

79,8

white

Diethanolamine oleic acid is prepared by mixing diethanolamine and oleic acid. The resulting product has a gel-like consistency.

The addition of diethanolamine to the oleic acid composition allows the abrasive powder to be retained on the surface of the granulated filler JOS. This contributes to the ingress of abrasive particles in the treatment area. By contacting the granular filler and parts, the process of micro-cutting of the surface metal layer is easier. This is also facilitated by the fact that the molecules of the oleinic acid ethanolamine are a surfactant. In tab. 2 shows the results of the test, the proposed formulations 1-4 and known.

table 2

49.5

49.5

70 0.5 0.3

0.3

0.2

0.2

0.3 29.2 50

50

The tests of the composition were carried out on a vibration installation of a toroidal type. Parts from aluminum alloy D16T were processed. Granular filler and parts accounted for 80% of the volume of the vibrating container.

In order to ensure that the composition is quickly and evenly distributed on the surface of the filler and parts, the loaded container is rinsed with water before introducing the composition into it.

Presented in table. 2 data shows that the metal removal rate during vibration grinding of aluminum parts increases by 2.43, 8 times, the cleanliness of the treated surface is improved by 2 classes. An advantage of the composition is that it does not contain the biologically rigid emulsifier OP-10, which usually makes it difficult to dispose of the wash water.

Claims (1)

Invention Formula A composition for vibratory grinding of parts made of aduminium alloys based on sodium nitrite and triethanolamine, characterized in that, in order to improve the process performance and improve the quality of machining of parts, the composition further comprises oleic acid diethanolamine and abrasive powder with the following components, wt.%: 58256046 ; Oleic acid diet. 1. Babichev A. P. Vibration Obnolamin 20-70 processing details. M., MashinostroyNitrite, sodium 0.1-0.5, 19.74, p.41-53. Triethanolamine .0-0-0,32. USSR author's certificate Abrasive powder to 100 548617, cl. From 09 G 1/02, 1975. Information sources, . ENIMS processing. M., 1977, p.40 (protoprinnye into account during the examination of the type) .. c 3. Volumetric vibrational image