Deep Drawing is a Sheet Metal Fabrication process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. It is thus a shape transformation process with material retention. The process is considered "deep" drawing when the depth of the drawn part exceeds its diameter. This is achieved by redrawing the part through a series of dies. The flange region (sheet metal in the die shoulder area) experiences a radial drawing stress and a tangential compressive stress due to the material retention property. These compressive stressesesult in flange wrinkles (wrinkles of the first order). Wrinkles can be prevented by using a blank holder, the function of which is to facilitate controlled material flow into the die radius.
Deep drawing is one of the most widely used processes in sheet metal forming. It is used in a wide range of production processes. For example, it is used by the automotive industry to manufacture car parts; it is also used for making household items such as stainless steel kitchen sinks.
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Objectives
Obj.Mark
Obj.Type
Magnification
Numerical
Aperture
(N.A.)
Working
Distance(mm)
System
LPL5X/0.13
 LWD Infinity Plan
5×
0.13
16.04
Dry
LPL10/0.25
 LWD Infinity Plan
10×
0.25
18.48
Dry
LPL20/0.40
 LWD Infinity Plan
20×
0.40
8.35
Dry
LPL50/0.70(S)
 LWD Infinity Plan
50×
0.70
1.95
Dry
LPL80/0.80(S)
 LWD Infinity Plan
80×
0.80
0.85
Dry
LPL100/0.90
   (Dry, S)
LWD Infinity Plan
100×
0.90
1.00
Dry
Eyepieces
Eyepiece
Mark
Eyepiece Type
Magnification
Field Dia.(mm)
Focus
(mm)
WF10×-18
Plan Wide Field
10×
Φ18
25
WF10×-18
Reticle Eyepiece(0.1mm)
10×
φ18
25
WF16×
Plan Eyepiece
16×
φ13
15.6
WF12.5×
Plan Eyepiece
12.5×
φ14
20
5×
Huygenian Eyepiece
5×
φ20
50
                                                               
 
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Laboratory Device Trinocular Inverted Metallurgical Microscope of Medical Instrument
Model NO.: MDJ200
Shape: Cylindrical Shaped Lens
Usage: Teaching, Research
Principle: Optics
Principle of Optics: Metallographic Lwd Infinity Optical System
Nosepiece: Quadplex
Filter: Blue/Green/Grey
Polarizing Unit: Polarizer/Analyzer
Mechanical Stage: 180X180mm 50X40mm
Stage Plate: Φ12.5
Illuminaton: 3W LED Lamp.(Option)6V/20W Halogen Lamp
Trademark: Optec
Transport Package: Carton
Specification: 437x268x522(mm)
Origin: Chongqing
HS Code: 9011100000
MDJ Inverted Metallurgical Microscope
Remark:20×,40×,100× are with spring Â
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