Press machine at car manufacture

1. Shearing
   
   The first process is a shearing or cutting process early. This process cuts a sheet of steel plate of raw materials ie steel plate coil rolls into sheets of steel plates of various sizes. Shearing process can be divided into several kinds of straight cuts, oblique cuts and cuts in combination.
2.  Stampling
   Press carried out in several stages, usually to create a press part so it takes 3 to 4 times press process. This is done to prevent the damage caused to the plate because the press process also a process of cutting, and bending withdrawal. Generally stampling process can be divided into several kinds:

1. Cutting process
   The cutting process is a process where material is cut according to the desired size so that the material can be worked into the next process. Type - the type of cutting processes, among others:
1.  Blanking
   Blanking adalah proses persiapan material, material dipotong sesuai dengan yang dibutuhkan. Proses blanking bertujuan agar mendapatkan hasil potongnya atau blank, sedangkan sisanya akan dibuang sebagai sampah atau disebut scrap.
2.  CuttingThat is a process that is still shaped cutting sheet material (blank material). The cutting process is a process of cutting some part of a part. The rest of the cuts discarded as scrap.
3.  TrimmingYaitu sutu proses pemotongan material pada bagian tepi. Biasanya proses ini adalah lanjutan dari proses sebelumnya seperti draw, stamp dan sebagainya.
4.  Notching.Notching adalah proses pemotongan pada bagian pinggir material part, biasanya pada progressive dies. Dengan pemotongan tersebut, part berangsur terbentuk walaupun masih menempel pada scrap skeleton.
5. Parting or SeparatingParting or separating is the process of separation of a part into two parts or sections of the sheet metal strip so as to produce the desired part. In the separating process are scrap unused.

2. Forming Processforming is a common term used in sheet metal forming process to obtain the desired contour. Forming process, not result in reduction or removal of material as happens in the cutting process. So for the term formation is also different to avoid misunderstandings. The types of forming processes include:
1.  Bending
   Bending is a process of bending the plate where the results of this bending of a line in accordance with the shape of the desired angle.
2.  Flanging.
   Flanging is the same as bending but the resulting bending line is not straight but follow the shape of the relevant part. This process is intended to strengthen the sides of the product or to reason, beauty.
3.  Forming.
   Forming refers to a more narrow sense, means deformation of sheet metal that is a combination of bending and flanging process. Forming process produces highly complex shapes by bending-bending and complicated contour parts.
4.  Drawing.
   Drawing is forming deep enough so that the formation process requires a blank holder or stripper and water cushion / spring to control the flow of material. For irregular shapes bead necessary to balance material flow. To produce a good product, you should use special steel sheet and the drawing process using a hydraulic press machine.
5. Deep Drawing.
   Deep Drawing a deep drawing process so as to get the shape and size of the final product is required several times a drawing process. Blank holder / stripper absolutely necessary and can only be processed on hydraulic press machine and uses a special metal sheet for deep drawing.
3. Compression This process included the forming operation in which a strong emphasis given to the sheet metal to produce high compressive stresses in the plate to produce plastic deformation. The types of emphasis process are:
1. Stamping or Marking.Marking or stamping or sometimes called a coining process is used to make signs, symbols, letters or other forms of cold forging process.
2. Heading.Heading is the process of formation of the head part, usually on a bar of steel material. Forming process with the process hot forging or cold forging where the ends of the parts are processed by using the pressing dies to form the head.
3. Sizing.
   Sizing adalah operasi dimana material plat diberi tekanan tinggi yang mana menyebabkan material mengalir, karena itu sizing bertujuan untuk memperbesar akurasi dimensi dari part / benda kerja.
3. Welding
   Welding or welding is the process before painting or staining. Welding is used to unify each press part that has been created so that it can form a complete car body. The welding process is used alone done manually but there is also carried out by robotic arms. Types of welding used is spot welding, but there are also welding co but only in certain parts only.
4. Painting
   Painting is the last process of manufacture of the car body. Painting done with spray paint and dye. Ost spray painting also is automated with a robot arm.

 

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