摘 要

金屬旋壓成形技術(shù)是近代金屬壓力加工中新興的一個領(lǐng)域，它具加工產(chǎn)品表面質(zhì)量好、可加工高難度變形材料、可改善產(chǎn)品硬度和強度、材料利用率高、能耗低等特點。旋壓在使多品種小批量的生產(chǎn)合理化和降低成本方面具有很高的價值，本文通過系統(tǒng)的分析，全面地介紹了旋壓成形工藝分析，為后續(xù)試驗設(shè)計提供理論基礎(chǔ)。
鎂合金是目前工業(yè)上可應(yīng)用的最輕的金屬材料，它具有較高的比強度、比剛度，良好的導(dǎo)熱、減震、電磁屏蔽及易切削等綜合性能，鎂合金在降低產(chǎn)品重量、節(jié)省能源和增強產(chǎn)品可靠性等方面具有獨特的優(yōu)勢，已成為目前汽車、航天、航空及電子通訊等行業(yè)的重要新型材料，被譽為21世紀的綠色工程材料，具有廣闊的市場開發(fā)應(yīng)用前景。本文通過查詢相關(guān)的文獻，利用現(xiàn)有的資源，考察鎂合金旋壓成形性能，分析了鎂合金AZ31在不同溫度下的旋壓成形工藝性能，并對一個簡單工件的旋壓生產(chǎn)工藝及模具機械了設(shè)計為后續(xù)試驗奠定了理論和工藝基礎(chǔ)。


關(guān)鍵詞：旋壓，鎂合金，AZ31,成形性



















ABSTRACT

Metal spinning technology is an emerging modern plastic forming process for alloys. It processes advantages of good product surface quality, capable of forming tough materials, improvement of product hardness and strength, high material utilization ratio, low energy consumption. Spinning is suitable to the production of products in small quantity at low cost and reasonable processing feasibility. The present paper is aimed to review the process in detail after systematic analysis of available literatures in order to provide a sound base for following-up experimental design.
Magnesium alloy is the lightest commercial alloy to date. It has high specific strength and stiffness, good thermal conductivity, outstanding damping shock absorption, electromagnetic shielding and good machinability. It is therefore has been used to produce products of light weight to reduce energy consumption and to enhance reliability. Consequently, Mg alloy, known as the green structural materials for 21st century, has become an important material for automotive, aerospace, aviation and electronic communications, and other industries. In this paper, the spinning forming characteristics of Mg alloy AZ31 at different temperatures has been analyzed in detail after literature analysis, followed by spinning mould design to provide a guidance for following-up experiments.


Key words： Spinning, magnesium alloy, AZ31, forming of

















目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1引言 1
1.2 旋壓的定義和分類 1
1.3 旋壓技術(shù)的發(fā)展概況 4
1.4鎂合金的發(fā)展概況 5
1.5 選題的背景和意義 6
1.6 本課題的主要研究內(nèi)容 6
2 旋壓工藝分析 7
2.1 引言 7
2.2 旋壓工程分析 7
2.2.1簡形件強力旋壓成形過程的3個階段 7
2.2.2簡形件強力旋壓成形的3個區(qū)域 8
2.2.3簡形件強力旋壓變形規(guī)律 8
2.3 旋壓件成形質(zhì)量的控制 9
2.3.1 懸壓件的金相組織 9
2.3.2旋壓件的尺寸精度 9
2.3.3旋壓件的表面粗糙度 10
2.4 旋壓工藝主要控制參數(shù) 10
2.4.1減薄率 10
2.4.2主軸轉(zhuǎn)速和旋速 11
2.4.3芯模和旋輪的間歇 11
2.4.4進給比 11
2.4.5旋輪的形狀 12
2.4.6旋壓溫度 12
2.5本章小結(jié) 14
3 鎂合金 15
3.1 鎂合金介紹 15
3.1.1鎂合金的特點 15
3.1.2鎂合金的應(yīng)用 17
3.2鎂合金的國內(nèi)現(xiàn)狀和前景 18
3.3鎂合金AZ31的可旋性分析 19
3.3.1引言 19
3.3.2鎂及鎂合金塑性變形的結(jié)構(gòu)特性 19
3.3.3 AZ31鎂合金鑄錠組織及退火工藝后組織觀察 20
3.3.4 變形溫度對流變應(yīng)力的影響 21
3.3.5 結(jié)論 21
3.4 本章小結(jié) 22
4 試驗設(shè)計 23
4.1 試驗條件的選擇 23
4.2試驗設(shè)備的設(shè)計 25
4.2.1 工件設(shè)計 25
4.2.2旋輪的設(shè)計 25
4.2.3其他相關(guān)結(jié)構(gòu)的設(shè)計 26
4.3 工藝參數(shù)的選擇 29
4.4 本章小結(jié) 30

參考文獻 31
致謝 32