The new machines provide a true pulse which means it will allow the welder to change the amount of heat applied, and also can control the decreased amount of heat. The tungsten is pointed, creating a finer weld. The layout for the machines is more simple and easier to use. These new and lighter duty machines feature a better balance check set for more progress than modification. All these new machines mean that the welder can produce better and more efficient and reliable welds in one work day (Austin, Gerald.
Plastic bumpers are not the best choice on a vehicle because plastic or fiberglass bumpers fracture easily, they are not as strong metal, and they cannot be modified or upgraded. Metal bumpers can have accessories bolted on, custom made, welded on. There are many cons for users of plastic bumpers, they are easily damaged, there is little protection for any body parts behind the bumper so there are more expenses from any crashes, and they are almost as expensive as metal bumpers. Manufacturer pros for plastic bumpers include; cheap and easy to manufacture, high profit margin, lower weight for better gas mileage, lower weight also means lower shipping costs, frequent replacements needed so there is more money to the producers because of the potential for repair parts (NHTSA 1-5). There are many different kinds of steels based on all of their mechanical properties.
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