Dome array production process of mold

September 16th, 2011

Today we hereby to introduce the details of dome array production process of mold. Please see below steps:

1, The first to punch spacer by mold (punch the dome array holes and ventilation slots);

2, Then put mylar cover on spacer;

3, Use mold to punch location holes(for LED lights or others);

4, then cut the dome array into appropriate size;

5, Assemble metal domes by tooling;

6, QC for the loss, incorrect and doubles metal domes;

7, Cover protective film on back;

8, Punch the outline of dome array;

9, Final inspection  (including the product appearance, dirt, less metal domes, etc..);

10, Packaging.

The above is the details of dome array production process of mold, if you want to know more, please contact us.

Tags: , ,
Posted in Dome Array | Comments Closed

Can metal domes afford high temperature reflow?

September 7th, 2011

Recently we received several customers asked whether the metal domes can afford high temperature reflow? and the metal domes if will have the deformations or force changed?

The material of metal dome is stainless steel, in general, our metal domes operating temperature is -40-100 degrees, so if the operating temperature close to 100 or more than 100,  there is definitely change for metal sanp domes, including force and resistance.

Some of the customers put the metal domes on the PCB, FPC and then SMT soldering, the temperature reaches 200 degrees, the performances will be definitely affected, and changed. Although we do not do this test, but is certainly metal snap domes can not pass the high temperature reflow. So now if it’s the only way to put metal dome on the PCB after reflow temperature , so does it work?

We hope to discuss with the friends who know this issues of metal domes, please leave your message. CMD manufacturing engage in providing a variety of solutions for customers.

Tags: , ,
Posted in Metal Dome | Comments Closed

What’s the snap dome force, Re-force and click ratio?

August 5th, 2011

What’s the snap dome force, Re-force and click ratio? Please see below for details.

Snap dome force is that the amount of the force when you press down the snap dome to contact the pcb. It should be stability of the force in order to ensure quality of the snap dome.

Re-force is the pressure let the snap dome return back to top.

Click ratio=(Force-Re-force)/Force*100%, the click ratio is narmal between 35%-75%

If you want to know more details about snap dome, please contact us for more information.

                        CMD Manufacture specialize in metal domes, snap domes, metal dome array, dome sheet, poly dome!!!

Tags: , , , ,
Posted in Snap domes | Comments Closed

Metal dome array deviation problem

July 18th, 2011

Do you have the questions of the metal dome array deviation problem? & do you also worry about it will affect the use of the dome array. Here we have this problem, explain in detail the existence of the metal dome array deviation problem.

1, The first metal dome array is made by laser, and assembly by fixture, there is a +/-0.15mm tolerance range;
2, Metal dome array of empty slots in diameter larger than metal domes as 0.20mm, so when the metal domes in the slot is ok; normal range
3, When metal dome array installed on the PCB, in fact, does not affect the clink feeling.

Metal dome array with a slight deviation in the production process is an inevitable phenomenon, is within the tolerance range, it does not affect the use of metal dome array installation. But exclude more serious deviation, this time we will test it by hand to correct them there.

Relative Posts:
1. The tolerance of dome array;
2. The difference of the Laser Cutting and Mold to make the dome array;
3. Dome sheet size and tolerance.

Tags: ,
Posted in Dome Array | Comments Closed

Pages:  1 2 ... 12 13 14 15 16 ... 33 34
« Older Entries
Newer Entries »