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  • The use and advantage of spot welding nut

    A special type of nut used to weld nuts on thin plates with a spot welder. It is mainly used for sealing plate, panel and other structural parts of welding nut required by electronic panel cabinet of locomotive. Its advantages are high production efficiency, good performance, low energy consumption,

  • 3.1certificate

    3.1 The full name of the certificate shall be "Fastener test Report F3.1", which is derived from ISO16228 "Types of Fastener Test Documents". The standard mainly provides the content required for fastener product test report, that is, the requirements for product test report, rather than the so-call

  • Stainless steel spring gasket swelling problem

    In the assembly process of spring washer, the spring washer directly enlarges and expands outward, which is called rising ring. This phenomenon has a long history, the cause of which was reported half a century ago, but so far there are different opinions, there is no clear conclusion. According

  • Stainless steel product surface brightness problem

    Stainless steel product surface brightness problem Stainless steel fasteners are mainly cold heading, in the process of processing the product surface will remain oil and cold heading process carbon deposition, so stainless steel fasteners need to be cleaned to restore their stainless steel color,

  • Method for removing burrs from fasteners

    Methods to remove burrs on fasteners:In order to improve the performance and service life of fasteners, it is necessary to remove fastener burrs before using fasteners. Fasteners are commonly used parts in machinery and equipment, and are also important parts. Therefore, the surface, acute angles an

  • Stainless steel fasteners are true or false

    The market at present there are a few quick inspection method of stainless steel fasteners, true and false, if stainless steel liquid and the magnet, but after many years, the two methods are not scientific, the reason is that drug testing potion is numerous, stainless steel composition is complic

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