SU1208091A1 - Composition for chemical vibration-abrasive grinding of stainless steels - Google Patents

Description

The invention relates to chemical machining of metals and alloys, in particular, to solutions for vibroabrasive grinding of stainless steels of the type 12X18H10T, 1X1 SHI FROM, 10X14AG15, etc.

The aim of the invention is to improve the surface quality and reduce metal losses.

In tab. 1 shows the results. vibroabrasive grinding of parts from stainless steel 12X18H10T in the proposed solution with different content of components and in known solutions in, for 1.5 hours.

The effectiveness of the effect of the composition on the process of stainless steel vibration testing was estimated by the value of

Aerotiv acid Sol on kuenoTa

Sour fluoride

potassium

Oxalic acid acid silica water ost nitric acid salt hydrochloric acid

Sour fluoride

potassium

Oxalic acid Silicon dioxide Water Ostazoa nitric acid Sol Na acid

Sour fluoride

potassium

Oxalic acid Silicon dioxide Water Ost

080912

removal of metal (Q, mg / cm-h) and surface roughness (Rp, µm). The test results, which were calculated as an arithmetic average of 5 between five samples, are shown in Table. 1. Good surface quality was also obtained for the minimum time (1.5 hours) with vibroabrasive grinding of stamped parts from stainless steel 1X18H10T, 10H14AG15, etc.

ten

Thus, the required 9th grade of the cleaned surface and the light silver color of the surface in the proposed composition can be obtained faster than in the known.

Table 1

Note

Traces of machining are removed completely, the surface has a uniform structure, the surface color is light-lo-gray, silver.

0.32

14.5

Traces of machining are completely removed, the surface has a uniform structure, the color of the surface is light gray, silver

0.30

"3.4

Also

0.31

12.8

Sour fluoride

potassium0.09

Oxalic acid 0.9

Silicon Dioxide 0.9 Water

Rest

Nitric acid 2,25 Sol on acid 0,8

Fluoride sour

potassium 0,13

Oxalic acid 1, 3- Silicon dioxide 1.3 Water Else

Sulfuric acid (spd. Weight 1.84 g / cm 2,5

S. Acid 30

Hydrogen peroxide (31% solution) 25

Chromic anhydride A

Sulfanol Water

0.2 Else

Oxalic acid4

Oleic acid3

Triethanolamine. 1 Polyoxypropylene Water Epoxy

25 Else

Continuation of table 1

surface light gray

0.63

10.0

Corrosive damage occurs on the surface.

0.64

15.5

The surface color is dark gray, traces of mechanical damage are not removed.

2.1

1.25

5.2

The surface is almost not polished at all, all mechanical damages are left without iemenein.

2.0

1.75

0.2

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Claims (1)

COMPOSITION FOR CHEMICAL VIBROABRASIVE GRINDING OF STAINLESS STEELS, containing nitric acid, hydrochloric acid, halogen ion and water, characterized in that, in order to improve surface quality and reduce metal loss, it additionally contains oxalic acid, finely dispersed I5-20 microns silicon dioxide, and as a source of halogen ion - potassium fluoride (KF-HF) in the following ratio, wt.%: Nitric acid Λ (specific gravity 1.4 g / cm °) 1.5-2.0 Hydrochloric acid (specific weight. 1.2 g / cm ³ ) 0.5-0.7 Sour Fluoride potassium 0,1-0,12 Oxalic acid 4.0-1.2 Finely divided silica 1.0-1.2 Water Rest S and. „, 1208091 f