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Bumper Plate
A weight plate is a flat, heavy object, usually made of cast iron, that is used in combination with barbells or dumbbells to produce a bar with a desired total weight for the purpose of physical exercise. Two general categories exist: "standard" plates, which have a center hole of approximately 25 mm (one inch), and "Olympic" plates, meant to fit on the 50 mm (two inches) sleeves of Olympic barbells. Standard plates are usually paired with adjustable dumbbells and Olympic plates with full-size barbells, although standard barbells and Olympic dumbbells exist. Weight plates may incorporate holes for ease of carrying (called "grip plates") or be solid discs (especially those used for competition). Non-competition plates often have variable diameters and widths, such as on the adjustable dumbbells pictured right, with heavier plates generally being larger in diameter, thickness, or both. Weight plates are typically round, although 12-sided and other polygonal varieties e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weightlifting
Weightlifting or weight lifting generally refers to physical exercises and sports in which people lift weights, often in the form of dumbbells, barbells or machines. People engage in weightlifting for a variety of different reasons. These can include: developing physical strength; promoting health and fitness; competing in weightlifting sports; and developing a muscular and aesthetic physique. Olympic weightlifting is a specific type of weightlifting sport practiced at the Olympic Games, commonly referred to simply as "weightlifting". Other weightlifting sports include stone lifting, powerlifting, kettlebell lifting, and para powerlifting—the weightlifting sport practiced at the Paralympic Games. Different weightlifting sports may be distinguished by the different ways of lifting a weight, and/or the objects lifted. Weightlifting events are key elements of strength athletics. Weight training is weightlifting to develop physical strength and/or a muscular physique. It i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chrome Plating
Chrome plating (less commonly chromium plating) is a technique of electroplating a thin layer of chromium onto a metal object. A chrome plated part is called ''chrome'', or is said to have been ''chromed''. The chromium layer can be decorative, provide corrosion resistance, facilitate cleaning, and increase surface hardness. Sometimes a less expensive substitute for chrome, such as nickel, may be used for aesthetic purposes. Chromium compounds used in electroplating are toxic. In most countries, their disposal is tightly regulated. Some fume suppressants used to control the emission of airborne chromium from plating baths are also toxic, making disposal even more difficult. Process The preparation and chrome plating of a part typically includes some or all of these steps: * Surface preparation * Manual cleaning to remove dirt and surface impurities * Removal of remaining organic contaminants using emulsion cleaning, alkaline cleaning, anodic electrocleaning, or solvent cle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leg Press
The leg press is a compound weight training exercise in which the individual pushes a weight or resistance away from them using their legs. The term ''leg press machine'' refers to the apparatus used to perform this exercise. The leg press can be used to evaluate an athlete's overall lower body strength (from the gluteus Maximus to the lower leg muscles). It can help to build squat strength. If performed correctly, the inclined leg press can help build knees that can handle heavier free weights, on the other hand, it also carries a risk of serious damage since locked knees can bend the wrong direction throughout the exercise. It can be performed in variations, for example with one leg, or attaching bands to the leg press. Types There are two main types of leg press: * The diagonal (incline) or vertical 'sled' type leg press. Weight plates are directly attached to a sled, which is mounted on rails. The user sits below the sled and pushes it upward with their feet. These machin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weight Machine
A weight machine is an exercise machine used for weight training that uses gravity as the primary source of resistance and a combination of simple machines to convey that resistance to the person using the machine. Each of the simple machines (pulley, lever, wheel, incline) changes the mechanical advantage of the overall machine relative to the weight. Stack machines A ''stack machine''—also called a ''stack'' or ''rack''—has a set of rectangular plates that are pierced by a vertical bar which has holes drilled in it to accept a pin. Each of the plates has a channel on its underside (or a hole through the middle, as visible in the picture) that aligns with one of the holes. When the pin is inserted through the channel into the hole, all of the plates above the pin rest upon it, and are lifted when the bar rises. The plates below do not rise. This allows the same machine to provide several levels of resistance over the same range of motion with an adjustment th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyvinyl Chloride
Polyvinyl chloride (alternatively: poly(vinyl chloride), colloquial: vinyl or polyvinyl; abbreviated: PVC) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year. PVC comes in rigid (sometimes abbreviated as RPVC) and flexible forms. Rigid PVC is used in construction for pipes, doors and windows. It is also used in making plastic bottles, packaging, and bank or membership cards. Adding plasticizers makes PVC softer and more flexible. It is used in plumbing, electrical cable insulation, flooring, signage, phonograph records, inflatable products, and in rubber substitutes. With cotton or linen, it is used in the production of canvas. Polyvinyl chloride is a white, brittle solid. It is soluble in ketones, chlorinated solvents, dimethylformamide, THF and DMAc. Discovery PVC was synthesized in 1872 by German chemist Eugen Baumann after extended investigation and experimenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olympic Lifts
Weightlifting (often known as Olympic weightlifting) is a competitive strength sport in which athletes compete in lifting a barbell loaded with weight plates from the ground to overhead, with the aim of successfully lifting the heaviest weights. Athletes compete in two specific ways of lifting the barbell overhead. The '' snatch'' is a wide-grip lift, in which the weighted barbell is lifted overhead in one motion. The ''clean and jerk'' is a combination lift, in which the weight is first taken from the ground to the front of the shoulders (the ''clean''), and then from the shoulders to over the head (the ''jerk''). The sport formerly included a third lift/event known as clean and press. Each weightlifter gets three attempts at both the snatch and the clean and jerk, with the snatch attempted first. An athlete's score is the combined total of the highest successfully-lifted weight in kilograms for each lift. Athletes compete in various weight classes, which are different for each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permanent Marker
A permanent marker or indelible marker is a type of marker pen that is used to create permanent or semi-permanent writing on an object. Description In general, permanent marker ink comprises a main carrier solvent, a glyceride, a 2-Pyrrolidone, pyrrolidone, a resin, and a colorant, making it Waterproofing, water resistant. It is capable of writing on a variety of surfaces from paper to metal to stone. They come in a variety of tip sizes (ultra fine to wide), shapes (chisel point, bullet tip, and wide bristle), and colors (metallic, or ultraviolet reactive). Most markers have alcohol-based solvents. Other types, called paint markers, contain volatile organic compounds which evaporate to dry the ink, and are similar to spray paint. Due to solvents such as toluene and xylene often being present in permanent markers, they have a potential for abuse as a recreational drug. The permanent marker was invented in 1952 by Sidney Rosenthal. Applications General purpose Permanent marke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paint Pen
A paint marker is a type of marker pen that is used to create permanent writing on a variety of surfaces such as paper, metal, stone, rubber, plastic, and glass. Ink Unlike with most permanent markers the ink is an oil-based paint and generally requires shaking before use, similar to an aerosol spray paint can. In addition, the line is very opaque and, unlike spirit-based or other permanent inks, will not fade with exposure to UV light, and overlays all other colors beneath it. The paint from these types of markers is not truly permanent, as it can be removed using high pressure cleaning or paint thinning solvents such as acetone. Dangers Paint markers, and permanent markers generally, contain the toxic compounds xylene or toluene. Like spray paint, these markers give off volatile organic compounds, which can be dangerous when used in a badly ventilated area or without a particulate mask. Gloves can also be worn to avoid absorption through the skin. Solidified paint pens Anothe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bumper Plate
A weight plate is a flat, heavy object, usually made of cast iron, that is used in combination with barbells or dumbbells to produce a bar with a desired total weight for the purpose of physical exercise. Two general categories exist: "standard" plates, which have a center hole of approximately 25 mm (one inch), and "Olympic" plates, meant to fit on the 50 mm (two inches) sleeves of Olympic barbells. Standard plates are usually paired with adjustable dumbbells and Olympic plates with full-size barbells, although standard barbells and Olympic dumbbells exist. Weight plates may incorporate holes for ease of carrying (called "grip plates") or be solid discs (especially those used for competition). Non-competition plates often have variable diameters and widths, such as on the adjustable dumbbells pictured right, with heavier plates generally being larger in diameter, thickness, or both. Weight plates are typically round, although 12-sided and other polygonal varieties e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammertone
Hammer paint (or hammered paint) is a special lacquer with a surface that looks like hammered metal when dried. It is also known as hammertone. Composition The slightly iridescent areas are caused by the different orientation of very small shiny particles, which are suspended in the lacquer. These particles are often made of the mineral mica. Mica is resilient, reflective, refractive, dielectric, chemically inert, insulating, lightweight, and hydrophilic.Dolley, Thomas P. (2008"Mica"() in ''USGS 2008 Minerals Yearbook''. Alternatively, aluminium or bronze powder may be used. To make the "hammered" effect more pronounced, a small amount of silicone oil may be added directly before application. Purposes Hammer paint is often used to beautify technical apparatus or as a protective coating. The optical advantage of hammer paint is that surfaces look acceptable even if the underlying surface is not flat and smooth. To get a regular paint to look smooth, the surface would have to be p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
