Based on the relations among the stress, final wall-thickness of thin-walled tube and the characteristics of tube material, original size, curling radius along with friction condition in a axially-compressed internal inversion process on right-angled fillet die, some analytical discriminants were established for judging if a double-layered tubular piece of aluminum alloy could be steadily formed from a certain-sized round tube via internal inversion process without interference and plastic instability of tube wall, and a method was put forward for determining the maximum and minimum usable curling radius or die fillet-radius for thin-walled tubes in the process.

基于薄壁管直角圓角模軸壓內(nèi)翻過程中各處應力及最終壁厚與管材特性、管坯尺寸国产精品黄的免费观看、卷曲半徑及摩擦條件之間的關系无码人妻精品一区二区不卡，推出了判別任一鋁合金雙層管件可否由特定尺寸圓管穩(wěn)定內(nèi)翻成形而不出現(xiàn)管壁干涉與塑性失穩(wěn)問題的解析判別式，指出了確定薄壁管圓角模內(nèi)翻卷曲半徑或模具圓角半徑極限值的方法欧美大鸡吧网。

This article introduce the designing principle and structural features of forging body for ball valve; detailed analgzing open die draw extruded forging process on smith hammer and die designing.

介紹了鍛鋼球閥閥體設計的原則和特點欧美在线观看精品，論述了在自由鍛錘上鍛造閥體的翻擠成形工藝及模具設

Springback is considered in the design of the bending die , since there is a big bending radius .The third die is wedge clicker die .

第二副模具為彎曲模，由于有一個較大的彎曲半徑色的日本视频，所以在設計中主要考慮回彈因素對成形精度的影響午夜三级亚洲。

Springback isconsidered in the design of the bending die ,since there is a big bending radius .The thirddie is wedge clicker die .

第二副模具為彎曲模，由于有一個較大的彎曲半徑超碰AV在线一区，所以在設計中主要考慮回彈因素對成形精度的影響帮我收一下欧洲黄色视频。

Then the key points in design of the automatic drawing die were discussed,including the structure,the working procedure,and the automatic feeding mechanism.

介紹了鋁茶壺嘴的成形工藝，自動拉伸模具的結構台湾一级婬片A片AAA毛片在线、工作過程韩日欧美激情一区二区、設計要點及自動送料機構。

PE-drip with vacuum forming mold is the round-based companys Danyi maze-injection molding machine with drip irrigation research and development of complementary products, used in the production of Danyi-maze with drip irrigation.

PE 型滴灌帶真空成形輪模具是專為本公司生產(chǎn)的單翼迷宮式滴灌帶注塑機研究開發(fā)的配套產(chǎn)品日本xx黄色，用于生產(chǎn)單翼迷宮式滴灌帶日韩在线观看自拍网址。

In the end, the stress and strain on the surface of blade are studied and a set of rules for producing blade are introduced.

葉片成形數(shù)值模擬研究部分，針對實際生產(chǎn)中的典型大葉片日日干干人人爽爽，采用實際生產(chǎn)用坯料與模具尺寸建立模型国产秋霞国产在线，因此具有實用性和代表性。

ABSTRACT Understanding the deformation conditions, the value and distribution of the parameters in forgings during the forming process are ...

了解鍛件在成形過程中的變形狀況及其有關狀態(tài)參數(shù)的數(shù)值與分布狀況對于工藝設計和模具設計是十分重要的欧美人妻三级片。

After the mold was set it was time to make some of formers.

之后人人澡人摸97人人超小，模具是它設定的時間，使一些成形超碰狠狠亚洲。

School of Materials Science and Engineering, State Key Laboratory of Plastic Forming Simulation and Die and

華中科技大學材料科學與工程學院塑性成形模擬及模具技術國家重點實驗室亚洲欧美日韩在线综合久，湖北武漢 430074