Pros and Cons of Using Plastic. Use your smartphone`s scanner to share this page with a friend. Use sharp scissors or a razor blade to … Welding of thermoplastics is accomplished in three sequential stages, namely surface preparation, application of heat and pressure, and cooling. Plastic welding is welding for semi-finished plastic materials, and is described in ISO 472 as a process of uniting softened surfaces of materials, generally with the aid of heat (except solvent welding). When melting plastics, always have a way to get rid of fumes, a fume extractor or doing it outdoors next to a fan. 1 PET Currently there are vacancies in the aquaculture business (Fish farming), piping and fabrication sectors. Polyurethane is a thermoset plastic, meaning that it is not meltable. The number one rule of welding thermoplastics is you must weld like-plastic to like-plastic. How to Identify Different Types of Plastic. Plastics Identification – how to identify plastics prior to welding: Plastic Welding & repair is relatively easy to carry out, and providing you follow a few fundamental steps, strong structural welds can be achieved. You can only weld like materials. The easiest way to identify the type of plastic you're working with is to look for the Plastic ID symbol the backside of the part. Identify the Plastic Types First and Locate the Resources for Plastic Welding. The plastics with the yellow background are thermoset plastics. The prep work is similar to the welding method. Hot gas welding can be used to weld practically any shape or size of component, and the equipment has probably the lowest cost of all the plastic welding techniques. Bumper covers, soft filler panels, gravel deflectors, rocker panel covers. This means that only similar plastics or the same type of plastic can be welded together. Today most plastics used in the manufature of modern vehicles are stamped with plastics identification codes, however, where this identification is not present, a welding test is required to ID the material to be welded. To identify the odor, samples of known plastic samples for comparison can be most helpful. Simply match the symbol on the part with the table below and look at the suggested repair method. Plastic welding processes are … Since this is the most common plastic, we have many varieties of rods to match different applications. You need less energy to transport and distribute it. The length of this video is in no way representative of the actual time required to perform a complete repair and therefore should not be used for estimating purposes. There are different types of thermoplastics, each having a specified temperature for welding operations. Plastics identification guide for plastic welding tools. When fusion welding with the nitrogen plastic welder, you will have to identify the type of plastic and select the correct welding rod. To complete the steps we are giving you below, all you will need is an electric welding gun and the correct welding rod. Plastic welding is welding for semi-finished plastic materials, and is described in ISO 472 as a process of uniting softened surfaces of materials, generally with the aid of heat (except solvent welding). The best option is to take strips of a plastic of the same type of the one you will weld. I thought that the black, carbon-like, hard plastic was ABS and used some ABS-compatible glue, but the bonding came off almost immediately after it was put under pressure. Identifying the type of plastic can be as easy as checking out the identifying number on the material itself. https://www.youtube.com/watch?v=NUYfC79r0A4, Fusion welding thermoplastics with the nitrogen plastic welder, Repairing thermoset plastics with the airless plastic welder, We have a huge selection of welding rod available to match a variety of plastics. This means that only similar plastics or the same type of plastic can be welded together. Urethane Supply Company has a pretty comprehensive guide to identifying plastics, should the piece you're repairing not have any identification marks on it. You'll see the ID symbol where it says PUR or RIM. Polyethylene is often used on overflow and washer bottles. Let us know your thoughts on this video by leaving a comment on YouTube! Plastics identification guide for plastic welding tools. Click here for a more complete listing. Use sharp scissors or a razor blade to … English Closed Captions have been provided for this video. The quickest, safest and easiest way to do this is using a Rod Test Kit or RTK Rod Test Kit (RTK) weld test procedure: Thermoplastics can be welded with the nitrogen welder. From plastic welding consulting to evaluation, we do more than just show you how to join your parts. PC + PBT, Xenoy (Polycarbonate blend), SLX, Bumper covers (primarily Ford products, 84-95 Taurus, Aerostar, some Mercedes and Hyundai's). We're going to focus in this video on welding polypropylene, since this is the most common kind of plastic you'll be dealing with. Identifying the Plastic The easiest way to identify the type of plastic you're working with is to look for the Plastic ID symbol the backside of the part. The quickest, safest and easiest way to do this is using a Techspan Rod Test Kit or RTK Browns when heated. Welding rod reference chart. Polycarbonate is used on body panels and bumpers. The quickest, safest and easiest way to do this is using a Rod Test Kit or RTK Rod Test Kit (RTK) weld test procedure: I used water bottle caps as filler to make the melted plastic joint thicker and more solid. The DVD is outdated and no longer available; however, our video resources are available on our. These plastics are sometimes identified as TEO or TPO. How to Weld Plastic – Plastic Welding Basic. This section of the video will help you select the right kind of welding rod for the project you're working on. For example, Polypropylene (most car bumers) can only be welded with a Polypropylene welding rod. Use fiberglass reinforcing tape over the area that was damaged. Identifying the plastic that is being welded is key to achieving a strong bond. Plastic welding processes … Simply match the symbol on the part with the table below and look at the suggested repair method. Code Plastic ABS Acrylonitrile Butadiene Styrene ABS/PC Polymer alloy of above The housing sector has gas membranes that require welding and are more commonly used, in addition the regulation regularly changes throughout the industry. In this case, plastic pellets are melted and injected into the mold. Plastic welding is the process of creating a molecular bond between two compatible thermoplastics. Whenever you want to combine two plastic pieces or fix a cracked piece of plastic, welding is a great way to get the job done. Plastic welding is welding for semi-finished plastic materials, and is described in ISO 472 as a process of uniting softened surfaces of materials, generally with the aid of heat (except solvent welding). And we often design … Has low coefficient of friction. Welding of thermoplastics is accomplished in three sequential stages, namely surface preparation, application of heat and pressure, and cooling. Radiator tanks, headlamp bezels, exterior trim finish parts, mirrors, plastic engine parts. Rapid angular oscillations are applied to heat the plastic parts to be joined. DCPD, PDCPD, Metton (Polydicyclopentadiene). Here are some tips for welding different types of plastics and steps to ensure a proper weld. Rigid, polyester matrix reinforced with glass fibers, sands finely, Rigid body panels, fenders, hoods, deck lids, header panels, spoilers, XPE, XLPE, PE-Xb, PEX, Crosslinked Polyethylene, Semi-Flexible, waxy or greasy feel, softens when heated but does not melt, Gas tanks, kayaks, canoes, trash cans, use is declining. You can only weld like materials. Heated until they soften, they can be molded or welded. Identify the plastic that is to be repaired (see table above for properties of different plastics). If the damaged part is SMC, cut a piece of scrap SMC as a backing panel. So, before I try again, I'd like a way to identify the material and use the right kind of products for it. Identify the plastic that is to be repaired (see table above for properties of different plastics). It is ideal for fabricating various custom-made items, as it can be tailored for welding parts with any joint geometry. Today most plastics used in the manufature of modern vehicles are stamped with plastics identification codes, however, where this identification is not present, a welding test is required to ID the material to be welded. Semi-flexible, melts & smears when grinding, waxy or greasy feel, usually a bit stiffer than PE's, Bumper covers (usually blended with EPDM), inner fenders, radiator shrouds, gas tanks, battery cases, interior panels, Semi-rigid, sands finely, usually off-white or black in color, Fenders, exterior trim, rear hatch panels. Another option is to use a … To identify the common plastics materials ; To implement procedure control and safe operation ; To understand weld properties ; To identify faults/defects and how to avoid them ; Course Duration: Six days in total covering: Hot gas appreciation - 1 day ; Hot gas and extrusion - 2 days ; Extrusion welding - 2 days ; Injection welding - 1 day Identifying the plastic that is being welded is key to achieving a strong bond. Identifying the Plastic(s) With plastic welding, like nearly all forms of welding, weld only ‘like’ materials. The work pieces are fused together with or without filler material. They will usually have a PP symbol molded into the backside. The housing sector has gas membranes that require welding and are more commonly used, in addition the regulation regularly changes throughout the industry. If PP, TPO or TEO plastic, apply Filler Prep Adhesion Promoter using a brush on sanded areas. Flexible bumper covers (especially on domestics), filler panels, rocker panel covers, snowmobile cowls. For example, large parts often need multiple gates, and multiple gates create weld lines and possibly a cosmetic blemish. About ninety-five percent of late model car bumpers are molded from polypropylene blends. in PVC), susceptibility to acetone (most plastics besides polyethylene and polypropylene will become “tacky” on exposure), and whether the plastic turns white under stress, e.g. Welding rod reference chart. See the plastics ID chart that came in the literature with your welder for more details. Bumper covers, air dams, grilles, interior parts, instrument panels, snowmobile cowls. when bent (PVC whitens; PET does not). Use heavy pressure and reinforce with, Rigid, sands finely, usually dark in color, Door skins (Saturn), instrument panels, street bike fairings. If you are going to use hot air welding to join your plastics, then you’ll get a better weld if the material is thicker than 1/16 of an inch. Instructions for this type of repair are shown in a later section of this instructional video. Currently there are vacancies in the aquaculture business (Fish farming), piping and fabrication sectors. So it is very important to first identify the material to be welded. This symbol indicates that the plastic is Low Density Polyethylene. These are usually black or dark gray, but sometimes they can be white. Nylon is used on radiator tanks, core supports, and other under-hood parts. To minimize effects of weld lines, the designer must consider part performance and filling or flow pattern of the plastic as it enters and flows through the mold, as well as tooling issues. Code Plastic ABS Acrylonitrile Butadiene Styrene ABS/PC Polymer alloy of above Usually it’s is a hidden place. Plastic Identification... What Can Be Welded? 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