Forming of powder Powder Compression Press,4 Column Hydraulic Press For Powder Forming,Hydraulic Press Machine For Powder Forming CHENGDU ZHENGXI HYDRAULIC EQUIPMENT MANUFACTURING CO., LTD. , http://www.zxhydraulic.com
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A process for compacting a metal powder body into a compact having a shape, size, density, and strength. It is one of the basic processes of the powder metallurgy process.
The metal powder is generally subjected to powder pretreatment before the powder is formed to meet the forming requirements. When mixing, it is generally necessary to add a certain amount of Powder Forming additive.
Powder forming is divided into two categories: powder press forming and powder special forming.
Powder press forming, also known as powder press forming, referred to as pressing, is the earliest forming method used in powder metallurgy production. In the late 18th and early 19th centuries, Russia and the United Kingdom used steel molds to make platinum products. Subsequently, the powder press forming method was gradually improved to press the compacts of various oil-impregnated bearings, powder metallurgy friction reducing products, powders, and Taijin mechanical structural parts. Since the 1930s, powder press forming has been further developed, and presses and mold design have been continuously improved, and it is possible to suppress complex shapes and parts with higher mechanization and automation.
Special shaping of powders is used where there are special requirements for the shape, size and density of the compact. There have been powder cold isostatic pressing, powder rolling, powder extrusion, slip casting and powder explosion forming. Powder injection molding occurred in the 1970s, and metal powder injection molding occurred in the 1980s. Powder injection molding has developed rapidly in the United States and Japan, and it can produce high-precision, irregular-shaped articles and thin-walled parts.
Netizens complain that old popcorn nuisance caused collective reminiscence
Netizens complain about old-fashioned popcorn nuisance caused collective reminiscence old craft diesel generator | diesel generator price / 2012-07-18
A netizen complains about the hot pop nuisance caused by popcorn
Many people collectively miss old craftsmanship
News source: The netizen Yu Yu Xiao Butterfly reflected that under the Manhattan Tower, Shandong Road, there were couples selling popcorn there during the peak hours of the afternoon shift. What's very annoying is that they are always burning popcorn stoves. The sound of the explosion made us very scared to walk down the street. The children were afraid that they could scare the children when they walked past. This situation continued for several months.
Reporter Zhang Shu Tina Nina
Yesterday morning, this Weibo post was forwarded on this reporter's blog, causing heated discussion among netizens. Among the hundreds of netizens who participated in the discussion, most of the bloggers felt that they had a little fuss about the old taste of childhood.
@ Chess players: As long as they do not affect traffic, after all, it is traditional craft, and now less and less.
@Simple: That is one of the good memories of our childhood.
@Wang Na: It is a heritage of culture, but also a delicious!
@Edelweiss: When we were young, we were looking forward to the popcorn master. When we heard the popcorn noise, we excitedly took rice or corn to line up and burst. A pot of rice or corn could burst a pot of rice flowers. Our snacks and eating popcorn are really enjoyable.
@Tomorrow will be better: In the past, there was often popcorn in the countryside. We were surrounded by a bunch of children. It was just to hear the sound of an explosion because it was mysterious.
@manuli: I can only say that the children are getting more and more timid. When I was young, I always brought corn to them to make popcorn. Now I can't hear this sound.
@ Jinan Dong'e Ejiao Direct Store: If you intervene, it will not only be a legacy of valuable traditional craftsmanship, but more importantly, you will lose the guts your children should have. You can tell the children in advance that this is a good memory for adults. The bang is very fun. Let the little boy experience the exercise. The little girl teaches her to pick up her ears and stand on the side, without any danger.
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