RoughFormingJZ - home

<h1>Rough Forming</h1>
 
 
<h3>· Casting (Sand Casting)</h3>
 
1. Definition: Sand Casting is used to make large parts. This process melts metal and pour the melted metal into a designed form that made out of sand. 
2. Examples: <span style="font-family: 'Calibri','sans-serif'; font-weight: normal; mso-ascii-theme-font: minor-latin; mso-bidi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-bidi-theme-font: minor-bidi; mso-hansi-theme-font: minor-latin;">Green Sand Molding, Chemically Bonded Molding, Bronze Sand Castings 
3. Picture 
<img src="/file/view/brest6.jpg/133063343/brest6.jpg" alt="" title="" /><img src="/file/view/brest2.jpg/133063319/brest2.jpg" alt="" title="" /> 
4. Explain 
Casting of artifacts such as arrowheads was originally done by pouring metal into open moulds, a process not unlike making ice cubes in trays. While the techniques may have advanced some, the idea remains the same, ie to pour molten metal into a shaped hole. 
 
 
<h3>· Die Casting</h3>
 
1. Definition: this is the process of using high pressure to melt metal into a designed form. 
2. Examples: high-pressure casting, squeeze casting, semi-solid die casting 
3. Picture 
<img src="/file/view/Hot.jpg/133063399/Hot.jpg" alt="" title="" /><img src="/file/view/Cold.jpg/133063357/Cold.jpg" alt="" title="" /> 
4. Explain 
Die casting machines are typically rated in clamping tons equal to the amount of pressure they can exert on the die. Machine sizes range from 400 tons to 4000 tons. The fundamental difference in die casting machines is the method used to inject molten metal into a die. The two methods are hot chamber or cold chamber. A complete die casting cycle can vary from less than one second to two-to-three minutes for a casting of several pounds, making die casting the fastest technique available for producing precise non-ferrous metal parts. 
From: <a class="wiki_link_ext" href="http://www.diecasting.org/faq/" rel="nofollow">http://www.diecasting.org/faq/</a> 
 
 
<h3>· Forging</h3>
 
1. Definition: is the process by which metal is heated and is shaped by plastic deformation by suitably applying compressive force. 
2. Examples: Open Die Forgings / Hand Forgings, Impression Die Forgings / Precision Forgings 
3. Picture 
<img src="/file/view/np06-002.jpg/133063427/260x228/np06-002.jpg" alt="" title="" style="height: 228px; width: 260px;" /><img src="/file/view/Shaft-Forging-Process.jpg/133063451/321x225/Shaft-Forging-Process.jpg" alt="" title="" style="height: 225px; width: 321px;" /> 
4. Explain 
In this process, the metal was first heated up to a certain temperature so it can be mold easily, then this heated metal will be mold into the shape that we want. 
 
 
<h3>· Welding</h3>
 
1. Definition: this is a process that commonly used to combine two joined parts 
2. Examples: Arc welding, Electroslag Welding, Gas Metal-Arc Welding, Tungsten-Arc Welding, Shielded-Metal Arc Welding 
3. Picture 
<img src="/file/view/welder1.jpg/133069807/350x320/welder1.jpg" alt="" title="" style="height: 320px; width: 350px;" /><img src="/file/view/welding.jpg/133069841/welding.jpg" alt="" title="" /> 
4. Explain 
In this process, one piece of metal was heated and melted. The melted metal was fused to bond with another metal. When the melted metal cools down, a strong bond was created and a permanent bond between two metals is formed.