TPT September 2011

друг с другом в головке установки и плавятся в электрической дуге. Расплав распыляется и сдувается на подложку сжатым воздухом. Частицы металла охлаждаются окружающей температурой и, сливаясь между собой, образуют высококачественное металлическое покрытие.

Компания Metallizing Equipment Co Pvt Ltd поставляет эту систему на трубные станы во всем мире.

管缝上喷锌 滚轧成型机通过几个连续的加工站来拉制热轧或冷轧钢材，并将材料加工成管子。用电阻焊关闭对接边留下 的焊缝。尽管填入的焊丝不会改变化学成分，但焊接过程产生的足够高的温度能减弱母材的一些抗腐蚀性 能。该过程也可能会使轧钢先前的镀铝和镀锌层汽化。 一个外形火焰表面清理工具或平滑化芯棒能清除管道表面外径焊缝飞溅或过焊。许多管道制造商直接在火焰 表面清理工具或平滑化芯棒下行线安装一个双线电弧喷涂工序。 喷涂工序用于铝、锌或他们的合金材料涂层喷涂，以恢复管道的耐腐蚀性能。在喷涂时焊缝仍然是热的，确 保喷涂材料与基底金属熔合，提高已喷涂材料的附着率和密度，使涂层混合，从而帮助隐蔽焊缝。 电弧喷涂，在操作成本上来说，是最便宜的热涂或金属喷涂工艺，用于将金属涂料喷涂到母材上。任何线材 形式的导电材料可以都可以使用电弧喷涂。 安装在喷枪内的拉线系统由交流电机驱动，确保送丝速度精确。线在喷枪头相遇，并在电弧里熔化，溶化体 被雾化，再用压缩空气吹到基底上。粒子冷却到环境温度，合成到高质量金属涂层内。 Flexible UV coatings help to build business WHEN a US tube manufacturer repeatedly experienced premature corrosion on pipes, end-user warranty claims and unanswered service requests to their coatings supplier, management realised it needed serious help from industry experts. They took action and contacted Quaker Chemical Corporation. Quaker is a leading global provider of process chemicals, services and technical expertise to a wide range of industries. They offer a complete “front-to-back” product portfolio for the Tube & Pipe industry, including lubricants, coolants, cleaners, rust preventives and coatings – including UV coatings. Quaker used its integrated knowledge of steel manufacturing, metalworking fluid processes and coatings chemistry to recommend an appropriate solution that would not only increase the flexibility of the tube coat- ing, but also offer superior corrosion protection and increase the cosmetic appearance of finished tubes. The resulting elimination of rejects/ returns and improved quality not only decreased costs, but also opened new sales opportunities for the manufacturer. Quaker’s customised QUAKERCOAT® product is a high-gloss, 100% UV-curable, permanent protective coating. This product offers a lower total applied cost, because the formulation chemistry provides balanced properties for flexibility, hardness and corrosion protection. In addition, this eco-friendly line contains zero- VOC emissions, has virtually no overspray and very limited discharge, and is available in different colors. By switching to Quaker’s QUAKERCOAT® UV product, the tube manufacturer was able to: eliminate the premature corrosion issues, which resulted in significant cost savings ($85,000 saved in lost claims and $25,000 saved in rework over an 8-month period); receive regular technical service visits from Quaker, resulting in increased worker morale because the operations staff felt taken care of by their manage- ment team; andincrease its own market image and as a result gain new business (over $1MM in an 8-month period). To learn more about Quaker Chemical and its full product line offerings, including its UV-curable series of coatings, please visit quakerchem.com. Metallizing Equipment Co Pvt Ltd - - - - - - - - -