Effect of Abrasive Tools in Galvanomechanical Treatment on the Roughness of the Deposited Chromium Layer

Zherebtcov, D.A.; Груба, О. Н.; Smolyakova, K.R.

doi:10.4028/www.scientific.net/ssp.284.1178

Cited by 4 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on this, the outer surface of the piston rod and the inner surface of the cylinder should be chrome-plated. Previously, a technology for applying chrome plating to the outer surfaces [12,13,14] and an installation for applying chrome plating to the inner surfaces of hydraulic cylinders [15] were developed.…”

Section: Introductionmentioning

confidence: 99%

Research on Chrome Plating Quality of the Internal Surfaces in the Hydraulic Drives with Hydrostatic Guideways

Ardashev

Yusubov

Shipulin

et al. 2021

MSF

View full text Add to dashboard Cite

The article presents a study of the characteristics of experimental samples with a chrome coating: the straightness and ovality of the inner surface of the cylinder, as well as the hardness and thickness of the chrome coating. The chrome coating is obtained on a previously developed installation for applying chrome coating on the inner surfaces of hydraulic cylinders of hydraulic drives with hydrostatic guides. The measurement of the geometric characteristics of the internal surface of the samples was carried out, the values of deviations from roundness and deviations from straightness were obtained. A study of the chrome coating was carried out, for this we cut out sectors from the samples, carried out their sample preparation, measured the hardness and took pictures under a microscope, measured the hardness and thickness of the chrome coating. The obtained measurement results: deviation from roundness, deviation from straightness, coating hardness, coating thickness - correspond to the specified technical requirements, the proposed construction of the installation for applying chrome coating to the inner surfaces and the electrolyte composition, selected earlier, are applicable for chrome plating of the inner surfaces.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on Chrome Plating Quality of the Internal Surfaces in the Hydraulic Drives with Hydrostatic Guideways

Ardashev

Yusubov

Shipulin

et al. 2021

MSF

View full text Add to dashboard Cite

show abstract

“…To this end, hydrostatic guideways are used in hydraulic drives, and it is also necessary to chromium-plate the outer surface of the rod and the inner surface of the cylinder. Previously, we developed a method for applying a hard chromium coating on outer surfaces [12,13,14], which can be used to machine the rod. To apply a hard chromium coating on the inner surfaces of a hydraulic cylinder, we must develop the composition of the chromium electrolyte and the modes of application which ensure the maximum coating quality and process performance.…”

Section: Introductionmentioning

confidence: 99%

Aspects of Applying Hard Chromium Coatings on the Inner Surfaces of Components for Hydraulic Drives with Hydrostatic Guideways

Ardashev

Shipulin

Degtyareva-Kashutina

2021

SSP

View full text Add to dashboard Cite

We considered the processes of chromium plating the inner surfaces of the components of cylinders with hydrostatic guideways. We demonstrated the various aspects of the chromium plating process – the limitations placed on the machinery depending on the dimensions of the parts to be plated and the unevenness of the deposition rate of chromium along the length of the part. We developed a diagram of an installation for the application of a hard chromium coating on inner surfaces, which includes a cathode, an anode, a tank, and a pipeline. The distinctive features of the installation are the method of supplying the electrolyte at an angle to the horizontal, which allows us to supply the electrolyte through a turbulent flow swirling along a helical path, and the use of a chromium-plated installation casing. We studied various modes for applying a hard chromium coating on the inner surfaces of a hydraulic cylinder. As a result, we determined the optimal composition of the chromium electrolyte – the ratio of chromic anhydride and sulfuric acid – which is 10:1, respectively, and experimentally selected deposition modes. Chromium coatings obtained through the use of the concentrated electrolyte, which we developed, and the chromium plating method have 5...20% greater hardness and a 10...30-times reduction in porosity with the formation of a shiny, lumpy sludge, which corresponds to corrosion-resistant and wear-resistant coatings needed to manufacture hydraulic drives with highly efficient hydrostatic guideways.

show abstract

“…The electrochemical method of coating, in particular, chrome coating, is widely used in machine building and instrument making. [1] provides a detailed description of use of coatings and alloys of various metals. It is noteworthy that currently many researchers are studying the properties of coatings which have chrome as one of the coating constituents and which are applied in different ways [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Performance of Electroplating Gas-Cleaning Equipment

Nitskaya

Smolyakova

Shmidt

2020

SSP

Self Cite

View full text Add to dashboard Cite

Electroplating industry has by-products, most of which are harmful. The paper considers the issue of removing aerosol emissions during chrome coating. We developed a droplet separator, which was granted a patent for a useful model. Based on the model, we proposed a stage-by-stage technical procedure for cleaning gas-air mixture to optimize the performance of gas-cleaning equipment during hard chrome coating. We calculated the amounts of water vapor and chromic anhydride which is released during chrome plating without cleaning and when using the developed procedure for gas mixture cleaning. We determined maximum surface concentrations of pollutants in exhaust gases after cleaning.

show abstract

Effect of Abrasive Tools in Galvanomechanical Treatment on the Roughness of the Deposited Chromium Layer

Cited by 4 publications

References 17 publications

Research on Chrome Plating Quality of the Internal Surfaces in the Hydraulic Drives with Hydrostatic Guideways

Research on Chrome Plating Quality of the Internal Surfaces in the Hydraulic Drives with Hydrostatic Guideways

Aspects of Applying Hard Chromium Coatings on the Inner Surfaces of Components for Hydraulic Drives with Hydrostatic Guideways

Optimizing the Performance of Electroplating Gas-Cleaning Equipment

Contact Info

Product

Resources

About