Each assembly presents differences as to the design and location of the work, making a unique specification necessary for each case.
The problems of the burning of the tip can be related to the following situations:
a) High rotation (tip burning): The high rotation of the equipment can cause high wear on the tip of the screw, due to the high friction index, thus generating the breaking of the cutting rod of the screw tip.
b) Two-task screw at the same time: The phase separation process can be applied in two steps at the same time (example: drilling and drilling), and can decrease the tip rotation process.
c) Very long extension: If the extension is too long it can decrease the screwdriver voltage, causing a decrease in rotation, making the drilling process difficult and generating tip burning.
d) d) Not specified drilling (tip burning): The bolt must drill the specified range of each end according to the Hard Technical Bulletin. Drilling above this range causes the tip to burn.
The possible solutions of tip burns are related to the following alternatives:
a) Use the appropriate equipment, according to Hard specification, of maximum rotation of 2500 RPM and 15Nm of wrench.
b) During the installation process, the screw must perform one operation at a time, such as:
In this way, loss of speed during the process and consequently burning of the tip is avoided.
c) Work with extensions of maximum 2 meters avoiding the loss of tension.
d) Work within the drilling range specified in the Hard Technical Bulletin, checking the comparison of: TYPE OF TIP X THICKNESS OF THICKNESS.
FM Approved is a certification awarded by FM Approvals, an organization linked to FM Global, which has laboratories and teams with more than 1500 engineers able to test and reproduce the most difficult meteorological phenomena, recreating winds with hurricane force (258km/h) and testing the strengths of building materials, in particular the roofing systems. The tests performed range from checking the sample of the product in relation to its design and / or specification to the quality and installation controls.
Some of the requirements of the quality system evaluated are: procedures for inspection of raw material receipt and manufacturing quality control, engineering documentation, measurement systems, procedures for traceability and treatment of anomalies. FM Approvals is recognized and respected worldwide. Its FM Approved certification assures customers that a product or service has been rigorously tested and is in compliance with the highest national and international standards.
WHAT IS GLOBAL FM?
FM Global is a specialized insurance company to prevent property claims through the use of loss prevention engineering. Founded in 1835, the organization has a strong presence in more than 130 countries, and one third of the companies present in the American publication “Fortune 1000” are its clients.
Best cost benefit and assurance that the products used in the work have quality standards, safety criteria and approved technical performances worldwide.
It is therefore imperative that, at the time of project specifications, the costs of fasteners at the worksite are negligible compared to the damages resulting from the damage to machinery, equipment, stocks of raw materials and finished products caused by the coverage in a storm or gale.
Currently the Durs Line and Metalic line items are FM Approved certified, but there are other products in the certification process. Check the table below for items already approved.
All of our products follow the same quality control criteria, so Hard’s entire product line offers high durability and strength.