Mihm Vogt sintering problem

EmanuelRo

EmanuelRo

New Member
Full Member
Messages
5
Reaction score
0
Hi guys, I`m new here. I own a HTS-2/M/Zirkon-120 for over a year and a half now. The oven has a bit over 3400h+ working hours and I sinter about 20-40 elements a day. I only sinter Katana zirconia HTML,STML and YML. It`s been doing a great job but in January this year it started doing some failures green-ish tint on the restorations and all of them where looking like the sintering process was incomplete. They where completely opaque.. Now in April and May everything comes bad out of it.
I started doing some cleaning and regeneration programs
I cleaned the chamber
Visually inspected the elements
Changed the beads and the bowl in witch the restorations sit
When doing the temperature calibration I got a +30 reading on the actual temperature ( expected 1550 and got 1570 from the Ferro HTH rings)
I even moved the furnace to another location in my city to also eliminate the possibility of current fluctuation
After all of this , nothing changed.

Do you guys have any ideas?
 
Wainwright

Wainwright

Active Member
Full Member
Messages
240
Reaction score
43
What cycle are you running on the Ferro rings? Most importantly ramp temp / speed

You can't just run them to 1550, the cycle is very specific to their specifications.

Have you replaced the elements or thermocouple?
 
R

rookiee

Active Member
Full Member
Messages
175
Reaction score
12
Hi guys, I`m new here. I own a HTS-2/M/Zirkon-120 for over a year and a half now. The oven has a bit over 3400h+ working hours and I sinter about 20-40 elements a day. I only sinter Katana zirconia HTML,STML and YML. It`s been doing a great job but in January this year it started doing some failures green-ish tint on the restorations and all of them where looking like the sintering process was incomplete. They where completely opaque.. Now in April and May everything comes bad out of it.
I started doing some cleaning and regeneration programs
I cleaned the chamber
Visually inspected the elements
Changed the beads and the bowl in witch the restorations sit
When doing the temperature calibration I got a +30 reading on the actual temperature ( expected 1550 and got 1570 from the Ferro HTH rings)
I even moved the furnace to another location in my city to also eliminate the possibility of current fluctuation
After all of this , nothing changed.
Left is a good one and right is the bad ( example)
Pic1
Hi guys, I`m new here. I own a HTS-2/M/Zirkon-120 for over a year and a half now. The oven has a bit over 3400h+ working hours and I sinter about 20-40 elements a day. I only sinter Katana zirconia HTML,STML and YML. It`s been doing a great job but in January this year it started doing some failures green-ish tint on the restorations and all of them where looking like the sintering process was incomplete. They where completely opaque.. Now in April and May everything comes bad out of it.
I started doing some cleaning and regeneration programs
I cleaned the chamber
Visually inspected the elements
Changed the beads and the bowl in witch the restorations sit
When doing the temperature calibration I got a +30 reading on the actual temperature ( expected 1550 and got 1570 from the Ferro HTH rings)
I even moved the furnace to another location in my city to also eliminate the possibility of current fluctuation
After all of this , nothing changed.

Do you guys have any ideas?
There are two things. First are heating elements gone or second, bad zirconia. Happened all the same to me and with Katana to be honest. And regarding zirconia, nobody will admit. You need to get into war with them. I was lucky to sort it out. If temp is higher it should result in normal and translucent zirconia not being opaque.
 
Car 54

Car 54

Well-Known Member
Donator
Full Member
Messages
7,134
Reaction score
1,122
No help with your problem, but your milled, milling restorations look really nice :)
 
CoolHandLuke

CoolHandLuke

Idiot
Full Member
Messages
9,612
Solutions
1
Reaction score
1,411
might just be a bad disc,
 
EmanuelRo

EmanuelRo

New Member
Full Member
Messages
5
Reaction score
0
What cycle are you running on the Ferro rings? Most importantly ramp temp / speed

You can't just run them to 1550, the cycle is very specific to their specifications.

Have you replaced the elements or thermocouple?
The oven has a service program for the ferro rings made by the manufacturer
I haven`t replaced anything, I was hopping that the components would run for more than a year without breaking.
 
EmanuelRo

EmanuelRo

New Member
Full Member
Messages
5
Reaction score
0
There are two things. First are heating elements gone or second, bad zirconia. Happened all the same to me and with Katana to be honest. And regarding zirconia, nobody will admit. You need to get into war with them. I was lucky to sort it out. If temp is higher it should result in normal and translucent zirconia not being opaque.
I`ve been taking with Mihm Vogt and they asked for pictures of the heating elements and they said that they look fine. I wasn`t able to find pictures with good and bad heating elements to have with what to compare them.
We use about 15-30 discs per month , its impossible that all of them are bad.
I`ve managed to borrow a DEKEMA austromat µSiC and from the same discs of zirconia now my restorations look perfect.
I guess I will have to send it to service to see what the problem is.
 
D

DocDNavy

New Member
Messages
1
Reaction score
0
EmanuelRO do you have MihmVogt's phone number. I am having a hard time finding it
 
tehnik

tehnik

Active Member
Full Member
Messages
358
Reaction score
12
I have had always +30 degrees with ferro rings....
 
R

rookiee

Active Member
Full Member
Messages
175
Reaction score
12
Hi guys, I`m new here. I own a HTS-2/M/Zirkon-120 for over a year and a half now. The oven has a bit over 3400h+ working hours and I sinter about 20-40 elements a day. I only sinter Katana zirconia HTML,STML and YML. It`s been doing a great job but in January this year it started doing some failures green-ish tint on the restorations and all of them where looking like the sintering process was incomplete. They where completely opaque.. Now in April and May everything comes bad out of it.
I started doing some cleaning and regeneration programs
I cleaned the chamber
Visually inspected the elements
Changed the beads and the bowl in witch the restorations sit
When doing the temperature calibration I got a +30 reading on the actual temperature ( expected 1550 and got 1570 from the Ferro HTH rings)
I even moved the furnace to another location in my city to also eliminate the possibility of current fluctuation
After all of this , nothing changed.

Do you guys have any ideas?
Give me LOT numbers of discs...Katana had issues which they didn't admit ever...
 

Similar threads

Top Bottom