{"id":7965,"date":"2019-08-01T13:13:49","date_gmt":"2019-08-01T13:13:49","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/37925677\/NEWS\/"},"modified":"2023-02-07T04:47:57","modified_gmt":"2023-02-07T04:47:57","slug":"spray-tips-wire-and-rod-feeders-for-thermal-spray","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/spray-tips-wire-and-rod-feeders-for-thermal-spray\/","title":{"rendered":"Spray Tips: Wire and Rod Feeders for Thermal Spray"},"content":{"rendered":"

Materials that can be thermally sprayed include polymers, metals, metal alloys, intermetallics, ceramics, and composites. The feedstock material can take the form of wire, rod, powder, or, with emerging solution spraying, liquid and complex gases. This leads to two basic types of feed systems: one that feeds wires or rods, and another that feeds particulates.<\/span><\/p>\n

 <\/p>\n

Wire and rod feeders are simple mechanical devices consisting of electrical or air-driven motors, drive rolls, and associated speed controls. Wires and rods must be fed continuously and uniformly into the flame or arc. <\/span><\/p>\n

 <\/p>\n

The injection point of the wire\/rod, and the feed rate are extremely important in controlling the coating quality. Uniformity of feed depends on motor drives having sufficient torque to overcome friction within the system, and in the case of wires, from the wire spools.<\/span><\/p>\n

 <\/p>\n

 Drive roll design is another important aspect of uniform feed. Drive rolls must grip the wire\/rod sufficiently to prevent slipping while not deforming the wire or crushing the rod. Drive rolls vary according to the wire properties. Rolls are usually made from metal or fiber-reinforced phenolic. Phenolic rolls are used for ceramic rods, whereas metal rolls are used for wires. Metal rolls can be knurled for hard wires or grooved for softer wires; many variations exist. <\/span><\/p>\n

 <\/p>\n

Figure 1 illustrates two concepts: V-groove and knurled.<\/span><\/p>\n

 <\/p>\n

This information is from ASM Handbooks Online, Vol. 5A Thermal Spray Technology, Coating Structures, Properties, and Materials. To find this information (subscription required), click on the link below and scroll down to Fig. 1.<\/span><\/p>\n

 <\/p>\n

https:\/\/dl.asminternational.org\/handbooks\/book\/12\/chapter\/132769\/Process-Control-and-Control-Equipment<\/a><\/span><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

https:\/\/dl.asminternational.org\/handbooks\/book\/12\/chapter\/132769\/Process-Control-and-Control-Equipment<\/a><\/span><\/span><\/span><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Materials that can be thermally sprayed include polymers, metals, metal alloys, intermetallics, ceramics, and composites. The feedstock material can take the form of wire, rod, powder, or, with emerging solution spraying, liquid and complex gases. This leads to two basic types of feed systems: one that feeds wires or rods, and another that feeds particulates.<\/p>\n","protected":false},"author":63082,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7965","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nSpray Tips: Wire and Rod Feeders for Thermal Spray - Heat Treating Society<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/37925677\/NEWS\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spray Tips: Wire and Rod Feeders for Thermal Spray - Heat Treating Society\" \/>\n<meta property=\"og:description\" content=\"Materials that can be thermally sprayed include polymers, metals, metal alloys, intermetallics, ceramics, and composites. 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