Ⅰ. Reasons for damage to the extruder screw

1. The temperature of raw materials is low when plasticizing.

2. The raw material is mixed with metal foreign matter or there are many impurities in the raw material.

3. The extruder screw is running for too long.

4. Unreasonable selection of screw materials.

5. The screw manufacturing precision is low, and the heat treatment hardness of the thread working surface is low.

Ⅱ. The disassembly sequence of the extruder screw

Special tools should be used when the screw is disassembled, and no heavy hammer is allowed. The specific disassembly steps are as follows:

1. Remove the nozzle and the connection between the nozzle and the extruder barrel.

2. Separate the key connection at the rear of the extruder screw elements from the drive shaft.

3. Remove the connecting flange and move the screw of the extruder forward.

4. When the screw head of the extruder is exposed to the barrel, immediately remove the screw head connecting thread (note: the threads here are generally left-handed).

5. Remove the check ring and sealing ring on the screw.

6. The disassembled nozzle, check ring, sealing ring and screw should be cleaned immediately with copper brushes and shovel tools while it is still hot. The special hard-to-clean sticky material should be heated in an oven at the lowest temperature that can soften the material, and then remove the residual material.

7. Assemble the parts on the screw of the extruder together, and apply molybdenum disulfide heat-resistant grease to each threaded connection part to facilitate the next disassembly.

8. After cleaning the surface of the screw that is not in use, apply protective oil, wrap it well, and hang it in a ventilated and safe place.

Ⅲ. Repair and replacement of extruder screw

1. If there is slight wear or scratches on the working surface of the extruder screw, you can use oil stone or fine emery cloth to grind and polish the damaged parts.

2. When the working surface of the screw is seriously worn and the scar groove is deep, the cause of the screw wear should be checked and analyzed, and the fault should be eliminated to avoid similar phenomena again, and then repair the deep scar groove.

If the thread of the entire extruder screw is severely worn, the matching gap between the screw and the barrel increases, the melt leakage increases during operation, and the injection volume is unstable, the outer circle of the screw thread should be thermally sprayed with wear-resistant alloy, and then According to the actual size of the inner diameter of the barrel, the screw grinding is carried out according to the requirements of the fitting clearance of the parts.

If the barrel of the extruder is seriously worn, the diameter of the inner hole increases after repair, and the grinding of the screw after spraying can no longer meet the requirements of the matching gap between the barrel and the screw, the screw should be remanufactured. The thread outer diameter of the screw should be processed according to the matching clearance requirements of the two parts and the actual inner hole diameter of the barrel.

LESUN is a leading extruder spare parts manufacturer in China, providing screws element and screw barrels. The extruder screw types include conveying screw element, kneading screw element, mixing screw element, etc;  Screw barrels include extruder closed screw barrel, extruder closed screw barrel, extruder feed barrel, extruder side-feed barrels, etc. Custom service is available. Meanwhile, we also provide surveying and mapping business as well as processing business for accessories made by major extruding machine companies. Feel free to contact us.

年轻的女士总是酷爱打扮个性，个性的服装搭配，还有与众不同的包包，色彩就是要比普通人炫丽几分，休闲出街总能时不时吸引到不少人观注，在即将到来的7月，尽管越来越炎热的天气，但也丝毫不会阻挡潮妞们户外休闲与旅行度假的举动，所以做为跟年轻MM一样想法的小编，这次也特别为7月的户外挑选几款十分个性的包包。

考验皮具大师们手艺的时候到了，有人说想与众不同，就得拥有别人没有的，这款来自2014香奈儿高级订制手工坊系列的le boy chanel，一定能为你的户外搭配增加不少的吸引力，一改le boy经典的菱格纹设计，在皮革上雕刻精美的稀有植物图案，诠释时尚与艺术的完美结合。

黑色的雕刻版le boy chanel。

户外出行时穿什么衣服，带什么包包是最另人纠结的，好看的怕不实用，实用的怕不时尚，搭来搭去还是小包大包一起带上得了，出行一时幸苦，可以换来旅行中一直美美的自己。

在7月中几乎很少会有用背着大大的包包了，而香奈儿的涂鸦布包简直就逆天了，高挑又宽阔的身材，设计师涂鸦上各种街头元素的色彩，似乎在宣泄年轻时未能释放的激情，全身都是用帆布制作，细节的地放配以扎实的牛皮，给人复古的感觉，以及带有运动感的手工编织的彩色绳索与挂勾，看来旅行度假搭配很适合。

包包拥有不大不小的尺寸才是好身材，拥有精美的皮革，特别是不显单调与增加个性色彩的小细节，满足女士们各种户外活动。

香奈儿今年特别流行的涂鸦风格，在一款款布包上尽情释放着年轻个性与激情

双肩包这个词在许多人认为实用大于美观，甚至十分平凡的配饰，而2014春夏季休闲度假系列香奈儿涂鸦双肩包很显然是一个例外。

孙骊款香奈儿绵布包包，也配有柔软的小羊皮，黑白色条纹装饰给你十分个性的户外打扮

cf全新演绎的金线系列

精美的缝线不失个性色彩，是2014当季最有人气的时尚元素，演绎出一款款潮不可挡的香奈儿手拿包、钱包。

镶嵌钻宝珠宝对于奢侈品而言自然不算个例，而《来自星星的你》千颂伊据中秀出的le boy chanel镶钻版竟是与爱情有关，若来万千女生喜爱。

刺绣徽章款dior水桶包，圆圆的身材经久不衰，只不拥有充足实用的空间，更拥有个性时尚的魅力，软软的胎牛皮面料，精美的刺绣徽章还装饰一颗颗璀璨的宝石，手拧部分的金属装饰增添不少吸引力，成为户外休闲与度假的个性之选。

In this video we see a KRONES packaging machine use xiros ball bearing rollers, drylin lead screws and nuts, drylin N, drylin R, energy chains, and tribo-tape in their high-speed labeling machine.

igus
www.igus.com

St Étienne co-President Roland Romeyer told Canal + last night that he does not want to sign soon to be free agent Mario Balotelli.

“Could we sign him? Of course. But would we do it? I do not think so. When you take into account the values of the club, our work with Christophe (Galtier) and his entire team, he is not the type of player that we want.”

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A trio of Premier League sides have made enquiries for AS Monaco forward Kylian Mbappé, according to RMC.

These clubs are Manchester City, Chelsea and Manchester United, who have all made contact with the player’s entourage.

There is no doubt that Mbappé will be one of the hottest names on the market this summer.

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First, remove all the sundries in the tower, and draw a horizontal line on the inner wall of the tower according to the top height of each layer of the packing ball and catalyst, as the pavement height mark. Carefully check the inert ceramic balls of different particle sizes, and store them separately according to the particle size marked on the product packaging for paving.

When paving the bottom layer of packing balls, care should be taken to avoid damage to other systems in the tower. The inert ceramic balls to be loaded should be hoisted into the tower and then spread; when the inert ceramic balls are spread to the level of the top surface of the layer, spread evenly with a shovel. The paving personnel should not stand or walk directly on the supporting material. Stand on a plank. The number of operators operating in the tower should be as few as possible to avoid the movement of the packing spherical layer. After the next layer of paving is completed, a layer of catalyst or inert ceramic balls can be paved.

The thickness of each layer of inert alumina ceramic balls should be accurate and uniform, and the surface should be scraped with a shovel or scraper, and the height should be the same as the horizontal line marked with the paving height.

在北京时间8月29日，WNBA常规赛的一场比赛中，印第安纳狂热队正与康涅狄格太阳队展开对决。

Skip发推：“凯特琳-克拉克在第一节完成的几次传球让我惊呼，哇，太像詹姆斯了!”

本教程适用版本：WPS 365 点击免费使用

本教程适用版本：WPS Office 2019 PC版  点此使用

在我们平时使用excel表格办公时，经常会接触到大量的姓名，而这些姓名又绝大多数是整列排列。这样打印既不美观又浪费纸张。那么有什么办法可以将这些姓名集中打印呢？下面我们就来学习一下。

首先打开一个姓名表格，点击上方的【打印预览】：

>>免费升级到企业版，赠超大存储空间

我们可以看到打印效果，单列形式且需要两页：

>>免费升级到企业版，赠超大存储空间

退回到excel表格，复制姓名如下：

>>免费升级到企业版，赠超大存储空间

在C2单元格中输入A2：

>>免费升级到企业版，赠超大存储空间

将鼠标光标移动到C2单元格右下方，待光标变成黑十字拖动鼠标完成次序填充：

>>免费升级到企业版，赠超大存储空间

在C3单元格输入A8，同样完成次序填充：

>>免费升级到企业版，赠超大存储空间

全部选中这两行单元格，向下完成填充：

>>免费升级到企业版，赠超大存储空间

我们看到姓名一共40个，所以将单元格数据填充到“A40”：

>>免费升级到企业版，赠超大存储空间

点击工具栏【开始】选项下的【查找】，二级菜单选择【替换】：

>>免费升级到企业版，赠超大存储空间

在【查找内容】一栏输入A，在【替换为】一栏输入=A，点击【全部替换】：

>>免费升级到企业版，赠超大存储空间

弹出的提示框点击确定：

>>免费升级到企业版，赠超大存储空间

这样就完成了姓名替换，再次打开打印预览，会发现姓名已经完成集中打印：

本教程适用版本：WPS Office 2019 PC版  点此使用

Feb
03

SANTA CLARITA, CALIFORNIA – The Fastener Training Institute (FTI), the leading nonprofit provider of fastener training opportunities, announced the appointment of Greg Rawlings as its newest Board of Directors member.

Rawlings is the current president of Nylok LLC, a Marmon Holdings company that is part of the Berkshire Hathaway Inc. group. Nylok is a value-added solutions provider of resin, adhesive and lubricant coatings for threaded fastener applications with five facilities in North America and business partners in 31 different countries across the globe. He has served in various roles at the company over the past 12 years including sales, engineering and management positions.

“We are grateful for the expertise Greg brings to our Board,” said John Wachman, Managing Director for Fastener Training Institute. “His knowledge of fastener coatings and wide range of experience in the industry will be invaluable to our organization.”

Rawlings brings 23 years of experience in the fastener industry to FTI’s Board of Directors and previously held positions in tooling engineering, applications engineering, sales, sales management and facility management for fastener manufacturer and distributor companies. He previously held a Board of Directors position for Fastener Education Foundation from 2016-2019. Currently, he also serves as the Vice Chair for the Industrial Fastener Institute Division 3 Automotive group. Rawlings holds a Bachelor of Science in Mechanical Engineering from Lake Superior State University.

“I’m happy to join the Board for Fastener Training Institute and share the organization’s desire to improve the fastener industry through training and continued learning opportunities,” said Rawlings.

FTI is committed to bringing fastener training opportunities to companies and students who do not have the ability to travel for live instruction and has adapted its training material virtually in response to the global COVID-19 pandemic.

For more information about Fastener Training Institute, visit www.fastenertraining.org.

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Klϋber Lubrication, a worldwide manufacturer of specialty lubricants, provides BARRIERTA K greases for automotive, electrical and precision engineering applications.

These greases are based on perfluorinated polyether oil (PFPE) to provide a long component life over a wide service temperature range. They are resistant to aggressive chemicals, compatible with elastomers and plastics, and provide low running torque. BARRIERTA K greases are highly suitable for the lubrication of rolling bearings, guideways, valves and seals.

BARRIERTA is Europe’s oldest high-quality brand of high-temperature lubricants and has become synonymous with long-term stability and thermal resistance, making it the first choice of lubrication experts in many sectors worldwide.

Klüber Lubrication is a manufacturer of specialty lubricants, offering high-end tribological solutions to virtually all industries and markets worldwide. Most products are developed and made to specific customer requirements. During its more than 80 years of existence, Klüber Lubrication has provided high-quality lubricants, thorough consultation and extensive services.

Klüber Lubrication
www.klubersolutions.com