Shock Resistance Improvement of Carbon Steel Carabiners Used at PPE

Abstract

In a continuously changing world where the human operator still plays an important role in most industrial activities, health and safety occupies a fundamental place, with the goal of maintaining workers healthy and in safe condition during their job activities. One of the means that make this goal achievable is the use of adequate personal protective equipment. The carabiners are connecting parts that link the components quickly and reversibly of personal protective equipment used against falls. Thus shackles can be divided in multiple elements, such as: the gate, which always opens inward and can be provided with or without the locking system, the second and the biggest element is the body which can have different form according to the BS EN 12275:2013 standard, the gate and the body are connected thru the rivet pin and nose. The personal fall arrest system used in areas such as construction, speleology, petroleum industry, includes metal components that must possess high mechanical properties, especially shock-resistance. In order to improve resilience, a layer of rubber paint will be deposited on the carabiner surface. The aim of this study is to analyse the influence of rubber coating on the carabiners shock resistance.

Evaluation of the Corrosion Resistance of Phosphate Coatings Deposited on the Surface of the Carbon Steel Used for Carabiners Manufacturing

“…Both the molybdenum bisulfate-based oil and the paint used in this study were purchased from the market. The elastomers-based paint is a product used for car paint, which protects against external factors, such as impact with stones or other objects, due to the elasticity it possesses [19][20][21].…”

Immersion Behavior of Carbon Steel, Phosphate Carbon Steel and Phosphate and Painted Carbon Steel in Saltwater

“…This anomaly could be explained when it is considered that HO − ions are involved in the corrosion process (Fe + 2H 2 O→Fe 2+ + 2OH − + H 2 ), in addition to carbon dioxide from the atmosphere. Chen et al [ 28 ] explain the appearance of the inductive loop through a relaxation process, at the level of the surface layer, due to carbon monoxide and some HO − anions in the solution.…”

“…The paint used to cover the phosphate layer is a commercial paint, type KS 1000 (Car System GmbH, Uetersen, Germany). Its deposition was conducted by spraying [ 28 ].…”

Carbon steel carabiners improvements for use in potentially explosive atmospheres

“…After each stage, the carabiners should be rinsed in water for the removal of the chemical compounds on the surface of the surface, which results from degreasing and pickling. The final stage of the phosphating process, drying, could be performed at room temperature or at slightly high temperatures by means of drying stoves [17,18].…”