<acronym id="mywyu"></acronym><tr id="mywyu"></tr>
<acronym id="mywyu"><center id="mywyu"></center></acronym>
<rt id="mywyu"><small id="mywyu"></small></rt>
<acronym id="mywyu"><small id="mywyu"></small></acronym>
<acronym id="mywyu"><center id="mywyu"></center></acronym>

Luoyang taimeng Machinery Manufacturing Co., Ltd.

CONTACT US

Luoyang taimeng Machinery Manufacturing Co., Ltd.
Address:No.1 Road,Luoyang Qingcheng high tech Development Zone
Linkman:Manager Liu
Telephone:0379-62317777
Mobile:13937999969
Website:http://www.ppc666.com

Technical Support
Current Location:Home - Technical Support

Analysis of casting and rolling plate shape control

Release time:2014-11-06


  In the production process of aluminum strip and foil, strip shape control is very important. Bad shape cause exceed the standard of flatness during rolling process, and even frequent breakage, leading to severe scrap. Not only directly affects the rate of finished products, but also increase the auxiliary production time, shortening the life cycle of the roll, affects the production efficiency, increase the cost of production. Shape control is a systematic project,should be the first source of cast rolling plate shaped grab, because the roll casting flatnessdirectly affects the subsequent rolling process of plate shape control.

  Aluminium alloy casting rolling plate shape control

 ?。?) roll casting flatness measuring method

  Usually the main evaluation of slab thickness transverse and longitudinal distribution. Cast rolling plate transverse thickness tolerance is controlled in the range of 0.5%, and the shapemust have in some measure method is convex; in the section from the center to both sides is divided into several equal distance of measuring points of thickness. Cast rolling plate thickness longitudinal tolerance control is within 0.75%; the measuring method is in a period of such as 200 -- 300mm slice a production line of every serial sections, roll a circumferential length, each piece of measurement method as before and numbered to fill in a form, get longitudinal data distribution throughout the thickness.

 ?。?) in continuous roll casting crown control

  In certain pre pressure roller, roller shape convexity can influence factors offset the roll bending,flattening, the corresponding thermal expansion etc Convexity and pre pressure, length of the roller, the roller sleeve wall thickness, roll sleeve material hardness, aluminium and aluminium alloys and so on.

 ?。?) pre pressure control

  A pre shaped pressure has little direct influence on board, but in the production side of separateadjustable pre pressure, can change the thickness of the plate. Usually in the slab thin side,online reducing pre - pressure parameters can be incremental sheet thickness, reduced without affecting the casting and rolling slab transverse thickness tolerance. According to the empirical data, the pre pressure adjustment of parameters in the given value 10%, slab thickness can change about 1%.

 ?。?) the cast rolling zone control

  If the slab sides exist certain board, can be thin slab casting mouth platform side position fine-tuning recede, unilateral extended length of roll casting zone, i.e. length solid rolling areaincreased, change roll contact pressure distribution and slab rolling deformation rate, plate thickness can be incremental, narrowing cast rolling plate transverse thickness difference.According to the empirical data, the cast rolling zone extended control within the given value10%, slab thickness can change about 1.5%.

 ?。?) roll suit with precision and grinding use system control

  In general, the coaxial error the roller body and the roller core should be less than 0.02mm, the casting roll sleeve inside and outside cylindrical surface of the coaxial error should be less than0.02mm, the diameter of the roller and the roller surface of the assembled coaxial error should be less than 0.04mm, so that the strip in the roll circumference within the scope of the thickness difference can be less than 0.06mm.

  Casting roll must strictly implement the regular car grinding system, strengthen the flatnessmeasuring and tracking, the shape control and roll sleeve surface cracking, corrosion,deformation condition into consideration together.

  Grinding amount = roll maximum crack depth * 2+0.2 - 0.5mm.

  Car after grinding roll parameters for coaxiality cylindricity: 0.02mm, 0.03mm, two roller diameteris less than 0.05mm, surface roughness R alpha 0.4, can ensure the flatness of longitudinalthickness deviation control precision to meet the requirements; the car after grinding, the needfor a period of time so that the internal residual stress recovery and put into use.

 ?。?) the circulating cooling system

  In order to guarantee the effect of cooling roll everywhere, we must ensure that the flow of cooling water and inlet and outlet temperature, import and export of the temperature difference is too large or less traffic, will cause the roller sleeve expansion uneven, affecting slabtransverse thickness difference. Generally, inlet pressure is 0.3 0.5MPa, the water inlettemperature of less than 30 DEG C, import and export of temperature 2 to 5 degrees celsius.

  The sink is reasonable in structure, such as rectangular round bottom tank, sine

  Curve flat water tank, the radial import and roll core hole in the same longitudinal section in cross arrangement, can enhance the uniform cooling effect, and reduce sink blocked. The roll core circulation channel blockage, water flow is not smooth, will cause the corresponding siteexpansion aggravated, serious wear and tear, material strength decreased, the thickness of plate super bad. In order to guarantee the normal use when the sink is unimpeded, conditionalunits can use soft water, no conditions can use detergent solvent cleaning regularly or rolldegloving cleaning roller core channel.

  Zhang Yingli (7)

  A certain Zhang Yingli (about 6 - 10N/mm), can be tension leveling on the shape to a certain extent, reduce the phenomenon of roll bonded and change shape. The number of effectivecontrol, can be cast rolling plate shape control in an ideal state, to meet the requirements of the subsequent rolling on the original shape of the.



日本三级香港三级人妇电影,日本一本二卡三卡四卡无卡在线,亚洲伊人成无码综合网,国产午夜福利片在线播放,亚洲国产AV玩弄放荡人妇系列 手机中文字幕永久在线| 日本学生制服被啪到喷水| 国内自拍偷国视频系列| 日本毛茸茸的丰满熟妇| ASS白嫩白嫩的PIC| 国产日韩AV在线播放| 黄 色 成 年 人 视频在线| 色综合久久综合欧美综合网| 香港三级片电影| 乌克兰粉嫩XXX极品| 撕开护士的黑色丝袜在线观看| 高清一卡二卡三卡四卡视频| 亚洲欧美国产综合在线| 高清无码日本一区二区| 亚洲精品无播放器在线播放| 亚洲日韩精品无码专区| 日本AV片源在线网站| 欧美高清XVIDEOSSEXO| 性深夜免费福利视频| 欧美喷潮最猛CYTHEREA| 亚洲AV日韩在线观看不卡无码| 全彩18禁裸乳动画无遮挡欧美| 学生自慰免费网站| 无码免费无线观看在线视频| 学生机机桶机机直播| 亚洲中文字幕日本在线观看| 在线抖音提取视频网址| 樱桃视频无打码无删减视频在线| 男女啪啪真实无遮挡免费| JAPANESE18一19HD强行| 亚洲综合色婷婷七月丁香| 日本亚欧洲色视频免费| 欧美丰满大屁股ASS| 免费看无码特级毛片| 天天噜噜噜在线视频| 国产 有码 无码 中文 制服| 中国母亲在线观看| 亚洲AV日本AV在线看| 无码人妻21P| 免费韩国伦影院在线观看| 孕交VIDEOS小孕妇XX| 午夜欧美不卡在线观看视频| 奶头好大揉着好爽视频| 欧美A一片| 日本不卡三区| 台湾四级露性器在线观看| 又粗又大又黄又爽的免费视频| 丰满少妇潮喷18P| 男J进女屁股视频免费观看| 精品AV一区二区三区在线观看| 亚洲同性男国产在线网站GV| 自拍偷区亚洲综合美利坚| 老熟女高潮喷了| 无码人妻21P| 暖暖免费大全| 朋友东西又大又长| 色老太婆BBW| 亚洲色大成网站WWW| 精品精品国产自在97香蕉| 在线观看黄AV未满十八| 日本不卡一卡二卡的视频| 2020日本高清电影| 毛1卡2卡3卡4卡在线观看| 在线AV| 四虎影视国产精品久久| 都市极品医神| 老熟女MATUREPOM| 亚洲AV日韩AV高潮潮喷无码| 女人扒开下面无遮挡免费| 11—15萝自慰喷水| 强奷漂亮的女邻居中文| 免费无码日本暖暖视频| 无码AV动漫精品专区| 老女老肥熟国产在线视频| 年轻母亲| 强行破学生处视频| 抖音网页发布视频| A片在线观看免费| 302寝室的那些事全文阅读| 欧洲熟妇乱XXXXX| 亚洲欧洲自拍图片专区| 老师破学生疼哭了处在线观看| AV无码免费岛国动作片片段欣赏网| 色综合AV社区男人的天堂| 日本成本人学生片无码免费| 男男无码专区GV| 人妻系列之绿帽怀孕| 夜夜躁狠狠躁日日躁| 一级少妇A片无码专区| 课堂上的娇喘H| 六十路老熟妇乱子伦视频| 呦男呦女视频八区| 男女啪啦啦超猛烈动态图| 老师H口漫画全彩无遮盖| 日本暴力强奷免费视频| 美女站立式X0X0又黄动态图| 啦啦啦啦啦在线观看视频www| 无敌神马影院手机版电影网| 欧美牲交作爱在线AAV| 暴雨夜被公侵犯在线观看| 无码啪啪熟妇人妻区| 西西大胆午夜人体视频无码| 中国XXXX业余偷窥| 国产午夜免费视频秋霞影院| 日本牲交大片免费观看| 免费污片不要钱软件| 高清一卡二卡三卡四卡视频| 国产睡熟迷奷视频| 高H全肉视频在线观看无需下载| 免费吃奶摸下激烈视频| 亚洲处破女 WWW| 18禁止的观看啪啪免费| 日本日本乱码伦视频在线观看| 男人和女人做爽爽免费视频| JAPANESE中国丰满成熟| 中字无码AV网站在线观看| 综合精品国产蜜芽| 韩国19禁漫画无遮羞免费| 很很鲁很很很鲁在线视频播放| 亚洲gv网站男男可播放| 技巧教你隔着内裤揉豆豆| 男女啪啪免费观看无遮挡| 欧美特黄特级AA爱大片|