SU1652380A1 - Method of treatment of tin-plate for can containers - Google Patents

Description

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(C7) The invention relates to o). The purpose of the invention is to increase the yield, o The method includes electrolytic deposition of a chromium layer with a thickness of 0.02-0.05 µm, chromate film and lacquer coating at 0.055 μm. At the same time, the output for a gesture of honor is and increased by 3% .1 table

L / n g-ppe refers to galvanosge- iii-, P (brushes for all-metal tinning of tin for canning containers

The purpose of the invention - the exit exit

 ONE

The method includes an electrolytic PSA; 1 tape-layer of chromium with a thickness of 0.02 0.05 micron chromate film and lacquer coating

The hromch layer is precipitated with a thickness that is three times the aluminum content in steel and is reduced by 0.055 microns.

For the manufacture of chrome-plated lacquered tin, 3 coils of black metal of the type PZhK from steel of various flames were used, izutofirovannoy method of continuous and razlizka, aluminum content 0.1) 25, 0 030, 0.035 May% Deposition of chromium was removed from standard electrolyte; s and 2.5 g / n H2SO4) with a prog-spine unit for a 90 m / min moving steel HroI tape

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Sediments of various thicknesses (0.0150055 µm) were obtained by changing the cathode current density (50-60 A / dm2) and the amount of RR in chromating.

Pasch.booch film was condemned from Elec olite containing 100 / i CgO s and 0.1 g liter SO / i, at 55 - 5 ° C and dense cathode and TOKS 20-40 A / dm for 2 s. Applying can varnish EP-527X grades (5 µm thickness) was carried out by spraying in a high-voltage electric field followed by induction drying.

From samples of chrome-plated lacquered tin, covers of type 1-82 were stamped,

The corrosion resistance test was performed by sterilization at 120 ° C for 1 h in model media.

Better corrosion resistance was observed on samples with a chromium coating, the thickness of which was in the intercourse of SL; GO OJ CO O

the content of aluminum in steel was chosen based on the proposed ratio of parameters.

The results of the testing of the protective properties of chromed tin are presented in the table.

As can be seen from the presented data, the proposed method provides an increase in the protective properties and the yield of chrome-plated tin.

The test results of the protective properties of chrome tin

Note. The remaining technological parameters of the process of producing chrome-plated lacquered tin were kept constant.

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Claims (1)

Claims The method of processing tin for canning containers, mainly of steel containing 0.025-0.035 wt.% Aluminum, including electrolytic deposition of a chromium layer 0.02-0.05 microns thick in order to increase the yield, a chromium layer is deposited with a thickness of three times the aluminum content in steel and reduced by 0.055 microns.