Abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing, which leads to part of the workpiece being worn away by friction. While finishing a material often means polishing it to gain a smooth, reflective surface, the process can also involve roughening as in satin, matte or beaded finishes. In short, the ceramics which are used to cut, grind and polish other softer materials are known as abrasives.
Cutting tool or cutter is used to cut, shape, and remove material from a workpiece by means of machining tools as well as shear deformation. There are several different types of single edge cutting tools that are made from a variety of hardened metal alloys that are vary in size as well as alloy composition depending on the size and the type of material being turned. These cutting tools are held stationary by what is known as a tool post which is what manipulates the tools to cut the material into the desired shape.
Machining is a process in which a material (often metal) is cut to a desired final shape and size by a controlled material-removal process. The processes that have this common theme are collectively called subtractive manufacturing, which utilizes machine tools, in contrast to additive manufacturing (3D printing), which uses controlled addition of material.
Material testing is an interdisciplinary field of materials science that covers the discovery of new materials and characteristic, classify particularly solids. The field is also commonly termed materials science and engineering emphasizing engineering aspects of building useful items, and materials physics, which emphasizes the use of physics to describe material properties.
Metrology is defined by the International Bureau of Weights and Measures (BIPM) as "the science of measurement, embracing both experimental and theoretical determinations at any level of uncertainty in any field of science and technology". It establishes a common understanding of units, crucial to human activity. Metrology is a wide reaching field, but can be summarized through three basic activities: the definition of internationally accepted units of measurement, the realisation of these units of measurement in practice, and the application of chains of traceability (linking measurements to reference standards). These concepts apply in different degrees to metrology's three main fields: scientific metrology; applied, technical or industrial metrology, and legal metrology.
Overall maintenance functions can defined as maintenance, repair and overhaul (MRO), and MRO is also used for maintenance, repair and operations. The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, and residential installations. Over time, this has come to include multiple wordings that describe various cost-effective practices to keep equipment operational; these activities occur either before or after a failure.
Sawing are commonly used for cutting hard materials. They are used extensively in forestry, construction, demolition, medicine, and hunting. saw is a tool consisting of a tough blade, wire, or chain with a hard toothed edge. It is used to cut through material, very often wood, though sometimes metal or stone. The cut is made by placing the toothed edge against the material and moving it forcefully forth and less vigorously back or continuously forward. This force may be applied by hand, or powered by steam, water, electricity or other power source. An abrasive saw has a powered circular blade designed to cut through metal or ceramic.
Pelindung kepala adalah salah satu item alat pelindung diri (APD), yang umumnya dirancang untuk melindungi area kulit kepala dan terkadang juga rahang. Wajah umumnya tidak ditutupi oleh pelindung kepala dan pelindung mata. Pelindung kebisingan atau pelindung pendengaran dan pelindung pernapasan adalah jenis APD yang terpisah, sehingga tidak tercakup dalam pelindung kepala. Pelindung kepala adalah peralatan yang melindungi area ini dari trauma benturan dan luka bakar.
FUNGSI HELEM DAN PERLINDUNGAN KEPALA
Cedera kepala merupakan salah satu penyebab kematian yang paling umum. Penting untuk memilih head gear yang benar dan menggunakannya dengan benar. Contoh umum pelindung kepala adalah topi keras.
Pelindung kepala harus dipakai saat bekerja di area yang berpotensi menyebabkan cedera pada kepala akibat benda jatuh atau benturan, atau di mana kemungkinan kontak dekat dengan konduktor listrik aktif. Standar Nasional Amerika untuk Perlindungan Kepala Industri (ANSI/ISEA Z89.1-2014) memberikan standar pengujian dan kinerja untuk helm industri atau topi keras. Spesifikasi termasuk pengoptimalan untuk benturan atau benturan horizontal dari atas dan insulasi proteksi listrik, serta proteksi panas. Helm dengan standar ini memiliki tali pendukung untuk menjaganya tetap di tempatnya. Memilih perlengkapan kepala dan pelatihan yang tepat harus dilakukan setelah penilaian risiko dan rencana keselamatan.
HARGA PERALATAN HELM DAN PELINDUNG KEPALA BERAPA?
Metalextra menjual beragam alat kerja pelindung kepala beserta aksesorisnya untuk memenuhi berbagai kebutuhan dalam standar keselamatan kerja baik berstandar ISO maupun standar Jerman DIN, Jepang JIS dan Amerika Serikat ANSI. Jangan ragu untuk mencari bantuan dari spesialis kami melalui email: [email protected]