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Member

Join Date: Feb 2008
Posts: 5

glass ceramic blocks manufacture

02/20/2008 3:12 PM

I need a process for making a glass-ceramic rectangular blocks (18mm x 14mm x 12mm.) starting from a powder glass-ceramic + pigments, forming the green body and then under vacuum heating at 1000ºC for obtaining the glass ceramic blocks. Any advice how to industrially make them?. (Process, machinery, etc)

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Guru

Join Date: Dec 2006
Location: Germany 49° 26' N, 7° 46' O
Posts: 1950
Good Answers: 109
#1

Re: glass ceramic blocks manufacture

02/21/2008 2:52 AM

Hi,

glass ceramics are normally fabricated as sheets and cut later to size.

This is much easyer.

What did you try until now?

Where are your problems?

How many pieces do you need? Once or per month, year?

Are you shure that 1000°C is adequate?

RHABE

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Member

Join Date: Feb 2008
Posts: 5
#2
In reply to #1

Re: glass ceramic blocks manufacture

02/21/2008 9:50 AM

Hi,

Thanks for your answer. I am planning to produce at least 500 blocks per month. We are pressing the powder in blocks using a mold by using a hydraulic uniaxial press. This process takes to much time. It will be interesting to know how to make a sheet and then how cut it in pieces. The limitation is the size of the furnace chamber but if I can press the equivalent of 10 blocks instead of one that will be much better. Also, I will need machinery for cutting, grounding , deburring the blocks to have a mirror finish. Firing temperature has been tested several times and is close to the softening point of the glass ceramic.

Thanks again.

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