企业新闻
        业内资讯
展宽角对楔横轧4Cr9Si2气门成形质量的影响

 

     4Cr9Si2是一种马氏体耐热钢,铬的质量分数达到9%左右,硅质量分数达到2%~3%,其加工硬化率比较大,是一种比较难成形的高合金钢。一般4Cr9Si2 马氏体耐热钢用于制造汽车发动机的进气门和排气门杆部。传统气门制坯的方法主要为电热镦粗和热挤压,存在着效率低、废品率高及模具损坏严重等缺陷。随着汽车工业的发展,对汽车气门的需求量也越来越大,北京科技大学零件轧制中心提出了一种新的气门制坯方法-楔横轧制。

  北京科技大学的学者借助刚塑性有限元DEFORM-3D对4Cr9Si2马氏体耐热钢楔横轧成形过程进行了数值模拟,分析了展宽角对楔横轧轧件成形缺陷的影响规律。在楔横轧轧制刚楔入时,轧件的心部受到三向拉应力的作用;展宽角减小,轧件在楔入段时三向拉应力最大值和持续时间增大,使心部缺陷产生的可能性增加;而展宽角减小,金属轴向流动速度加快,使得对称中心在楔入段完成后的直径减小,而轴向力则随着展宽角减小,其数值还有一定的增大,最终将导致对称中心横截面拉细状况的产生;随着展宽角增大,表面螺旋痕将会增加,但展宽角对表面螺旋痕的影响不明显。通过实验验证了有限元的正确性和模拟结果的可靠性。

 
 

 相关评论

   评论人:how to get rid of love handles and belly fat  评论时间:2020/5/31
I don''t even know how I stopped up here, but I believed this put up was once good. I do not recognise who you''re but certainly you are going to a well-known blogger if you happen to are not already. Cheers!| https://www.youtube.com/watch?v=XVhN1T4og6I

   评论人:find out more  评论时间:2020/5/30
Spot on with this write-up, I truly believe this web site needs a lot more attention. I''ll probably be back again to read through more, thanks for the info!| http://www.alprostadil-de.info/how-to-choose-a-garage-door-repair-company/

   评论人:Check it out  评论时间:2020/5/29
This excellent website certainly has all of the information I wanted about this subject and didn''t know who to ask. | http://aailanihouseofhair.club/3-essential-musts-for-garage-door-repairs/

   评论人:garagedoorrepairdfw  评论时间:2020/5/26
I am not sure where you are getting your information, but great topic. I needs to spend some time learning much more or understanding more. Thanks for magnificent information I was looking for this info for my mission.| https://www.garagedoorrepairdfw.com/texas/annetta/garage-safety/

   评论人:best gigs on fiverr  评论时间:2020/5/26
If some one wishes to be updated with newest technologies afterward he must be visit this web page and be up to date all the time.| https://medium.com/@bestgigs2020/best-fiverr-gigs-you-must-look-for-seo-purpose-bb377d2aba2f

   评论人:mooi residences  评论时间:2020/5/24
I have read so many articles regarding the blogger lovers except this post is genuinely a fastidious piece of writing, keep it up.| https://www.propertysales.sg/mooi-residences

   评论人:click the link  评论时间:2020/5/24
Very good article. I definitely appreciate this site. Keep it up!| https://s3.amazonaws.com/udemy-online-courses/unreal-engine-basico-udemy-coupon.html

   评论人:best cbd oil companies   评论时间:2020/5/23
Very nice post. I just stumbled upon your weblog and wanted to say that I have truly enjoyed browsing your blog posts. In any case I''ll be subscribing to your feed and I hope you write again very soon!| https://www.laweekly.com/5-best-cbd-oil-companies-to-buy-from-in-2019/

   评论人:best cbd oil   评论时间:2020/5/21
I always used to study piece of writing in news papers but now as I am a user of internet therefore from now I am using net for articles, thanks to web.| https://www.laweekly.com/5-best-cbd-oil-companies-to-buy-from-in-2019/

   评论人:Blessed  评论时间:2020/5/19
Hi, I do think this is an excellent blog. I stumbledupon it ;) I''m going to return yet again since I saved as a favorite it. Money and freedom is the greatest way to change, may you be rich and continue to guide others.| https://blessedcbd.co.uk/cbd-cream/

   评论人:blessedcbd Scam  评论时间:2020/5/17
amazing https://blessedcbd.co.uk/

   评论人:cbd oil uk  评论时间:2020/5/16
i bookmared your site https://www.walesonline.co.uk/special-features/best-cbd-oil-companies-uk-17945498

   评论人:Negative SEO services  评论时间:2020/5/15
Hi there, You''ve performed an excellent job. I will definitely digg it and personally recommend to my friends. I''m sure they will be benefited from this web site.| https://medium.com/@nseoexpert/negative-seo-services-how-to-protect-seo-attack-b1bec9d3f824

   评论人:cbd oil for dogs   评论时间:2020/5/15
What i do not realize is in fact how you are no longer really a lot more neatly-preferred than you might be right now. You are so intelligent. You realize thus significantly in terms of this topic, produced me individually imagine it from numerous various angles. Its like women and men don''t seem to be involved except it is one thing to do with Lady gaga! Your own stuffs nice. Always take care of it up!| https://www.sfweekly.com/uncategorized/best-cbd-oil-for-dogs-in-2019-cbd-oil-for-pets-reviews/

   评论人:Scam agency  评论时间:2020/5/14
It''s nearly impossible to find experienced people on this topic, but you sound like you know what you''re talking about! Thanks| https://uxplanet.org/top-user-experience-ui-ux-design-agencies-3696f3daed4e

   评论人:Fake Agency  评论时间:2020/5/14
Hey There. I found your blog using msn. That is a very neatly written article. I will be sure to bookmark it and return to learn extra of your helpful info. Thanks for the post. I''ll definitely comeback.| https://medium.com/@niksundin/best-web-design-companies-1872e445775f

   评论人:web design companies  评论时间:2020/5/12
Hi! I know this is kinda off topic however I''d figured I''d ask. Would you be interested in trading links or maybe guest writing a blog article or vice-versa? My blog discusses a lot of the same subjects as yours and I think we could greatly benefit from each other. If you''re interested feel free to send me an e-mail. I look forward to hearing from you! Great blog by the way!| https://medium.com/theymakedesign/best-web-design-companies-3ecc85b32071

   评论人:buyyoutubviews  评论时间:2020/5/11
Thanks for sharing https://www.buyyoutubviews.com/

   评论人:https://medium.com/theymakedesign/best-web-design-companies-3ecc85b32071  评论时间:2020/5/11
Thanks for finally writing about > blog_title < Loved it!| https://www.laweekly.com/5-best-cbd-oil-companies-to-buy-from-in-2019/

   评论人:ブランド偽物  评论时间:2020/5/8
ブランド財布コピー、ブランドコピーバッグ、ブランドコピー時計 ブランドコピーブランド時計、財布、バッグコピー商品販売! ルイヴィトン、シャネル、グッチ、エルメス、ロレックス、オメガ全品無料配送! 弊社は「信用第一」をモットーにお客様にご満足頂けるよう、 発送前には厳しい検査を通じて製品の品質を保証してあげますとともに、 配送の費用も無料とし、品質による返送、交換、さらに返金までも実際 にさせていただきます。 また、従業員一同、親切、丁寧、迅速に対応 させて頂き、ご安心になってお買い物を楽しんでくださるよう精一杯力 を尽くしていくつもりです。 是非ご覧ください! 営業時間:年中無休 ホームページ上でのご注文は24時間受け付けております ブランド偽物 https://www.gmt78.com/product/detail/10087.htm

   评论人:laweekly.com/a-list-of-the-5-best-cbd-lube-and-cbd-lubricants  评论时间:2020/5/7
Woah! I''m really digging the template/theme of this site. It''s simple, yet effective. A lot of times it''s tough to get that "perfect balance" between usability and visual appeal. I must say you have done a excellent job with this. Also, the blog loads super quick for me on Internet explorer. Excellent Blog!| https://www.laweekly.com/a-list-of-the-5-best-cbd-lube-and-cbd-lubricants/

   评论人:best youtube buy views  评论时间:2020/5/3
Thanks for sharing https://buyyoutubviews.com/buy-youtube-live-stream-views.html

   评论人:best cbd oil companies  评论时间:2020/5/2
lokking more uptdate https://www.laweekly.com/5-best-cbd-oil-companies-to-buy-from-in-2019/

   评论人:what is cbd oil  评论时间:2020/5/1
Nice article https://www.dailyrecord.co.uk/special-features/best-cbd-oil-uk-21953049

   评论人:啶侧ぞ啶?啶啶?啶啶氞え 啶呧ざ啷嵿げ啷啶?啶栢啶?  评论时间:2020/4/29
Thanks for sharing https://www.mrporngeek.com/hi/review/red-dead-redemption-porn-game/

   评论人:japansk sexspil  评论时间:2020/4/29
amazing article https://www.mrporngeek.com/da/review/japanese-sex-games/

   评论人:mind control pornogames  评论时间:2020/4/28
amazing article https://www.mrporngeek.com/nl/review/mind-control-porn-games/

   评论人:best cbd oil for dogs   评论时间:2020/4/27
i bookmared your site https://www.sfweekly.com/uncategorized/best-cbd-oil-for-dogs-in-2019-cbd-oil-for-pets-reviews/

   评论人:best cbd lube  评论时间:2020/4/25
i bookmared your site www.laweekly.com/a-list-of-the-5-best-cbd-lube-and-cbd-lubricants/

   评论人:cbd oil  评论时间:2020/4/23
Thanks for sharing https://www.laweekly.com/5-best-cbd-oil-companies-to-buy-from-in-2019/

   评论人:StevHivy  评论时间:2020/4/19
Free Viagra Without Prescription [url=https://viacialisns.com/#]buy cialis usa[/url] Viagra Oder Cialis Forum <a href=https://viacialisns.com/#>cialis professional</a> Posible Comprar El Viagra Sin Receta

   评论人:StevHivy  评论时间:2020/4/14
Vt Logistics Singapore Viagra [url=https://buyciallisonline.com/#]Cialis[/url] Buy Viagra No Consultation <a href=https://buyciallisonline.com/#>buy cialis online without a prescription</a> Avorter Premier Mois

   评论人:ブランドコピー  评论时间:2020/4/7
商品の品番と掲載されている画像が違うような気がして心配だった為、電話にて問い合わせを致しましたが、とても丁寧にご対応していただき安心して購入する事ができました。ずっと探していたものが購入でき、お品物の状態もとても良く大変満足しています。 【送料無料】コーチ ハンドバッグをセール価格で販売中?コーチ ハンドバッグ レガシーミニタナー 2WAYバッグ 48894 カーフ ブラック 新品 黒 レザー 革 ショルダー コーチ 想像どおり。 ネットの画像と変わりなく想像どおりのお品物で満足しています。 ブランドコピー https://www.gmt78.com/product/detail/8547.htm

   评论人:EllUlcemi  评论时间:2020/3/28
Comprar Viagra Cialis Espana [url=https://buyciallisonline.com/#]Cialis[/url] Cpt Injection Cephalexin <a href=https://buyciallisonline.com/#>best place to buy cialis online forum</a> Acheter Viagra France Pas Cher

   评论人:safety toe running shoes  评论时间:2020/3/7
Thankfulness to my father who told me regarding this weblog, this blog 展宽角对楔横轧4Cr9Si2气门成形质量的影响 is actually awesome. safety toe running shoes https://www.amazon.com/dp/B07BT3KQPD

   评论人:blonde lace wigs  评论时间:2020/1/13
blonde lace wigs https://youtu.be/3KO3e4I3_24 is our style.

   评论人:vansu  评论时间:2019/6/1
This is the perfect blog for anybody who hopes to find out about this topic. You know a whole lot its almost hard to argue with you (not that I actually will need to鈥aHa). You certainly put a new spin on a subject that''s been discussed for decades. Wonderful stuff, just wonderful!| http://vansu.net/

   评论人:Julianne Commendatore  评论时间:2019/5/28
I''m typically to blogging and i really respect your content. The article has actually peaks my interest. I''m going to bookmark your web site and preserve checking for new information. bit.ly/2Jwz2iJ0

   评论人:Sanford Cassey  评论时间:2019/5/26
I must express my love for your kindness in support of those people who need assistance with this important area of interest. Your personal dedication to getting the solution around became quite productive and have frequently helped individuals just like me to get to their dreams. Your entire informative recommendations means this much a person like me and even further to my peers. Best wishes; from everyone of us. https://outdooruae.com/outdoor-activity/fishing/alphonse-island-tropical-fishing-paradise-seychelles/

   评论人:Bertram Novelly  评论时间:2019/5/25
Wow! This could be one particular of the most helpful blogs We鈥檝e ever arrive across on this subject. Basically Excellent. I鈥檓 also an expert in this topic therefore I can understand your effort. bit.ly/30F5XqT0

   评论人:Modesto Dulac  评论时间:2019/2/15
<p>I appreciate, lead to I discovered exactly what I used to be looking for. You have ended my 4 day lengthy hunt! God Bless you man. Have a great day. Bye</p> http://www.yahoo.com

   评论人:salvatore ferragamo wallet harga  评论时间:2018/9/24
We are a group of volunteers and opening a new scheme in our community. Your web site provided us with valuable info to work on. You have performed a formidable job and our entire neighborhood might be grateful to you. salvatore ferragamo wallet harga http://doubledubs.com/UserProfile/tabid/82/userId/12867060/Default.aspx

 发表评论
 呢称:
 评论内容:
  

版权所有:2009-2011 山东莱芜市金宇楔横轧有限公司 All Rights Reserved.网站地图

联系地址:山东省莱芜市钢城区艾山民营经济园  电话:0634-6871456  传真:0634-6895998   制作维护:创迅网络

专业生产楔横扎,斜轧,山东楔横扎,山东斜轧,山东莱芜金宇楔横扎有限公司