DE|ES

Lehrs / Solar- and pattern glass

Pattern- and Solar Glass Annealing Lehr

Lehrs / Solar- and pattern glass

Description

Based on the longstanding and well-founded experiences in the annealing process, the designs applied to the various kinds of glass annealing lehrs were transferred successfully in the development and research of an innovative and modern Solar Glass Lehr, integrating of course today’s modern technologies and manufacturing methods.

The Solar Glass Lehrs are executed in modular zones of 2,25 m length, based on the well known and proved Pennekamp standards. Innovative developments in different areas have been integrated in order to optimize the efficiency and productivity as well as to create process reliability of the lehrs. The below mentioned features furnish the proof:

Features

  • all tunnels zones (A,B, C, D and RET) with inner linings manufactured from heat & chemical resistant stainless steel
  • modular sections with side wall inserts, allowing flexible installation for edge heating, heating and indirect/semi-indirect cooling units
  • special design for over & under ribbon heaters
  • integrated electronically movable edge heaters
  • flexible installation of heating & cooling at any time
  • double lateral wall system with stainless steel surface
  • use of ceramic rollers for glass transport and scratch minimization (no SO²)
  • individual drives, one unit per roller (no open sprockets/oil pans)
  • drive configuration by inverters, to compensate thermal glass shrinkage on ribbon
  • additional backup inverters for operational roller drive safety
  • roller support arranges by zones, for easier alignment and higher accuracy
  • individual inverter controlled cooling units (decentralized)
  • downscaled RET zone for optimized thin glass cooling results
  • temperature controlled, automated dampers and fans
  • redesigned F zones, based on modular, retractable cooling banks, (decentralized)
  • automatic internal cullet removal system (patented cullet belt)
  • fully automated PLC control & monitoring (no manual dampers)
  • full scope supply incl. control & field wiring