Microwave Oven Inner Metal Door Featured

The microwave oven cavity/chassis and door are made by metal-forming techniques, and then painted by electro-deposition, in which electric current is used to apply the paint.

Some Information:

1) Part material: ST14;

2) Material Thickness:0.5mm;

3) Die life:500,000 shots;

4) Punch of standard: PUNCH;

5) Die Type: Stage;

Microwave oven metal inner door

Our advantages:

1)Located in Qingdao,which is home appliance city with famous Haier, Hisense, Aucma;

2)Reasonable die structure to save cost, also guarantee the quality of products;

3)Tracking every steps for manufacturing the dies, to ensure the lead time;

4)Feedback  in 24 hours;

5)All employees intend to make each product with zero defect;

6)Design software: AUTOCAD, UG, Pro/e, Solid works;

7)2~5 samples will be send to customers for inspection or assembly before shipping;

8)Advanced manufacturing, measuring and testing equipments
Microwave oven inner door


Oven Cavity and Door Manufacture:

1 )The process of manufacturing a microwave oven starts with the cavity and the door. First, the frame is formed using automatic metal-forming presses that make about 12 to 15 parts per minute. The frame is then rinsed in alkaline cleaner to get rid of any dirt or oil and further rinsed with water to get rid of the alkaline solution.

main assembly operation

 

2) Next, each part is treated with zinc phosphate, which prepares it for electro-deposition.The resulting coating is about 1.5 mils thick. The parts are then moved through a paint bake operation where the paint is cured at 300 degrees Fahrenheit (149 degrees Celsius) for 20 minutes. The chassis or frame is mounted in a pallet for the main assembly operation. A pallet is a vise-like device used in conjunction with other tools.

The chassis or frame is mounted in a pallet for the main assembly operation. A pallet is a vise-like device used in conjunction with other tools.

microwave stove stamping  die

3 After the door has been painted, a perforated metal plate is attached to its window aperture. The plate reflects microwaves but allows light to enter the cavity (the door will not be attached to the cavity until later, when the chassis is assembled).

Microwave oven inner metal door stamping die

The cooking chamber is in fact a Faraday chamber, and it prevents the waves from coming out of the oven. The oven door usually has a window for easy viewing, but the window has a layer of conductive mesh some distance from the outer panel to maintain the shielding.

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