wire rope break test pricelist

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The CSIR is the recognised custodian of in-service mine rope technology, and performs the bulk of the statutory tests required for hoist ropes in the mining industry.As a National Key Point, the Wire Rope Testing Laboratory also maintains the largest historical database of rope tests in Africa.

Access to rope test data and certificates are provided via a user-friendly web-based system. Through this facility clients can get direct access to their test results, and the Department of Minerals and Energy can draw lists of tests performed by the various mines. Registered users can follow the link below to access the rope test database. (Rope Certificates) The rope test prices are also provided.

Safety is a crucial factor in the profitability of the mining industry. With thousands of workers transported up and down mine shafts each day, measuring the safety of hoisting ropes form an integral part of mine management.Strict laws cover the maintenance and testing of steel wire ropes.The Wire Rope Testing Laboratory focuses mainly on the destructive testing of these ropes.

For each hoist rope tested, the customer is provided with a detailed report that includes the breaking force, absorbed strain energy, force vs. elongation curve and an assessment of the condition of individual strands and wires at the point of failure.The report also alerts the customer to rope characteristics that breach, or are approaching, accepted performance standards. For example, a breaking force that is 90% or less than the new rope-breaking force. An assessment of corrosion and general rope lubrication is also provided.

The Laboratory is an advanced technology facility housing state of the art wire rope testing equipment.The machines used in the destructive testing of steel wire ropes have capacities ranging from 1 MN for small diameter ropes, to 15 MN for ropes up to 160 mm in diameter.

A 15 MN MFL tensile test machine which is able to accommodate large-diameter ropes as used in the oil drilling, bridge and shipping industries.It also caters for tensile tests on conveyor belts up to 1.2m wide and large-link chains as used on coal mine draglines and;

The CSIR Wire Rope Testing Laboratory is the government approved facility for statuary testing of winding ropes. Because of the CSIRs impartiality, professionalism and technical expertise, rope manufacturers locally and abroad also choose to have their wire rope samples tested by the CSIR. Existing clients include, but are not limited to, the following:

1.1 This test method covers the tension testing of wire ropes and strand at room temperature, specifically to determine the minimum acceptance strength or nominal strength, yield strength, elongation, and modulus of elasticity.

Gripple Ltd. design and manufacture fabricated metal products used extensively in the Building Services, Agriculture, Civil Engineering, Viticulture and Seismic Construction sectors. The company originated through innovation in the field of fasteners for wires—which “grip” and “pull”—and these components feature in award-winning solutions for clamping, seismic bracing, suspension and hanging system applications installed anywhere from schools to supermarkets.

As part of the continuous improvement ethic, the Quality and Design Department wanted to review their in-house methods and re-evaluate the test procedures for measuring break loads in their cable components. Gripple’s wire rope fastening systems are engineered to achieve a minimum load rating which, if exceeded, creates a break in the rope as the failure mode. A 5:1 safe working load (SWL) safety factor is adhered to and the test system must cater for wire specimens in the range of 1.5 — 6 mm diameter.

Mecmesin supplied a software-controlled MultiTest 50-i twin-column tensometer with lever-action wedge grips and specialist capstan rope grips; all rated to 50 kN. Previous test procedures had secured the test specimen to the fixture by means of a choke knot, which had proved generally effective. However, with some configurations of wire gauge it had become the point of failure. In order to remove this variability, back-to-back comparison tests were performed with combinations of the available grips:

One test per wire size per configuration was performed at a constant rate of extension of 100 mm/min, running until the Emperor software detected a break. The peak force was recorded and the specimen checked to ensure that the failure was not attributable to local stresses at the grip, slippage inside the grips or any other invalid failure mode.

It was found that Configuration 1 produced valid results only on products up to 3 mm gauge, above which slippage in the upper grip occurred. Configuration 2 successfully handled larger diameter samples, however the knot could cause the failure at lower non-representative loads. Configuration 3, comprising the pair of specifically-designed capstan rope grips, performed consistently across all specimens, returning accurate and repeatable results; thus meeting the high standards set by Gripple.

The company understood the importance not only of the choice of correct testing equipment, but also the best way in which to configure and implement a system. This proved essential in creating the optimum internal test procedures to guarantee thorough QC for its own customers.

As Gripple needed to deploy test equipment in all other global manufacturing locations, the Mecmesin system provided flexible software licensing for easy exchange of test programs and test results. This ensured exactly the same test routines and best practice standards could be efficiently shared amongst all sites, making data comparison seamless.

As a company that focuses on quality, testing is at the heart of everything we do. We are LEEA accredited and have state-of-the art testing equipment to ensure all components are tested to the highest industry standards.

Proof load testing is generally performed with the Working Load Limit (WLL). The assembly is subjected to this load and monitored over time. As standard, we perform proof load testing of two times WLL (up to 30 tons) for two minutes. But we can change this criteria to meet your requirements.

Wire rope, except as provided in § 1919.14(b), shall be tested by sample, a piece being tested to destruction, and the safe working load of running ropes, unless otherwise acceptable to the Administration on the basis of design, shall not exceed one-fifth of the breaking load of the sample tested. In the case of running ropes used in gear with a safe working load exceeding 10 tons, the safe working load shall not exceed one-fourth of the breaking load of the sample tested.