Title: General Higher Education Materials Forming and Control Engineering series of planning materials: material forming principle(Chinese Edition)
Publisher: Chemical Industry Press Pub. Date :2010-08-01
Publication Date: 2000
ISBN 10: 7122085708
ISBN 13: 9787122085702
Binding: Soft cover
Condition: New

About this title

Synopsis

《材料成形原理》系统阐述了各种材料成形过程的基本原理，即材料成形过程中的能流、物质流和信息流规律及其物理本质，涵盖了铸件形成理论、塑性成形原理、熔焊原理、粉末冶金原理等基本内容，并对它们之间的共性部分进行了有机整合，对个性部分也作了有选择性的重点论述。本教材共分为5篇，主要内容包括：液态金属的凝固、材料连接成形基础、材料成形过程中缺陷的形成与控制、金属塑性成形力学原理、粉末成形原理。本教材注重理论分析与实际应用相结合，既有一定的理论深度，又注意深浅适度。通过对本教材的学习，可对材料成形过程及其基本原理有较深入和系统的理解，为后续专业课程的学习以及研究新材料、新工艺奠定了理论和实践基础。《材料成形原理》适合作为材料成型及控制工程专业应用型本、专科学生学习的教材，也可作为相关专业学生和工程技术人员的参考用书。金属中的原子主要靠金属键结合。原子中不是所有电子在决定固体金属的强度、硬度等特性的相互作用中都起同样作用的。形成原子满壳层的内部原子实质上没有影响，只是外面的价电子在金属键中起主要作用。金属键的理论模型有经典电子理论和金属的分子轨道模型（即能带理论）。（1）经典电子理论1916年，荷兰理论物理学家洛仑兹（H.A.Lorentz）提出金属“自由电子理论”模型。认为在金属晶体中金属原子失去其价电子成为阳离子，阳离子如刚性球体排列在晶体中，电离下来的电子可在整个晶体范围内在阳离子堆积的空隙中“自由”地运行，称为自由电子。金属阳离子之间固然相互排斥，但在晶体中自由运行的电子把所有的金属阳离子吸引在一起，“胶合”成金属晶体，这种作用称为金属键。从自由电子理论可以看出，金属键没有方向性和饱和性，金属键是在一块晶体的整个范围内起作用。由于金属键没有方向性，原子排列方式简单，重复周期短（阳离子堆积得很紧密），因此在两层阳离子之间比较容易产生滑动，在滑动过程中自由电子的流动性帮助克服势能障碍。滑动过程中，各层之间始终保持着金属键的作用，金属虽然发生了形变，但不至于断裂。自由电子的存在使金属具有良好的延展性、导电性和导热性。0绪论10.1材料液态成形技术10.2材料连接成形技术20.3材料塑性成形技术30.4粉末成形技术40.5本课程的性质与任务40.6本课程与其他课程的联系与分工5第一篇液态金属的凝固第1章液态金属的结构与性质61.1固态金属的加热、膨胀及熔化61.1.1原子间作用力的电子理论61.1.2金属的加热膨胀71.1.3金属的熔化71.2液态金属的结构81.2.1从物质熔化过程对液态金属结构的认识81.2.2X射线衍射对液态结构的研究81.2.3理想液态金属结构91.2.4实际金属和合金的液体结构101.3液态合金的性质111.3.1液态合金的表面张力111.3.2液态合金的黏度151.4液态金属的流动性与充型能力161.4.1流动性与充型能力的基本概念171.4.2影响液态金属充型能力的因素及铸造工艺中的促进措施18思考与练习23第2章铸件的凝固242.1铸件的温度场242.1.1数学分析法242.1.2数值计算方法252.1.3铸件温度场的测定292.1.4影响铸件温度场的因素292.2铸件的凝固方式312.2.1凝固动

"About this title" may belong to another edition of this title.

Store Description

Thank you for visiting My bookstore! We are an online bookstore, and Is the China's largest online book sales. Generally our books are from China, with reasonable price and decent printing quality. We are always trying our best to satisfy customer's needs!

Visit Seller's Storefront

Seller's business information

NAN JING SHI JIANG NING QU NING YUAN DIAN ZI SHANG WU ZHONG XIN
Room 264, Oujiang Shopping Center, No. 1 Dongxin South Road, Dongshan Street, Jiangning District, NanJing, Nanjing, JS, 211100, China

Sale & Shipping Terms

Terms of Sale

We guarantee the condition of every book as it's described on the Abebooks web sites. If you're dissatisfied with your purchase (Incorrect Book/Not as Described/Damaged) or if the order hasn't arrived, you're eligible for a refund within 30 days of the estimated delivery date. If you've changed your mind about a book that you've ordered, please use the Ask bookseller a question link to contact us and we'll respond within 2 business days. Please Note:We don't sell any international Edition to you...

More Information

Shipping Terms

Most orders are shipped within 24 hours. We will delivery these items to you by SAL, EUB, EMS, FEDEX etc.

Shipping rates from China to U.S.A.

Shipping rates from China to U.S.A.
Order quantity	16 to 30 business days	8 to 16 business days
First item	US$ 18.00	US$ 30.00

Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.