Scarfing
Your Speciallist for processing of semi-finished product
EVERTZ Scarfing Machine 009
The most modern high-capacity scarfing machine of its kind in the world. The scarfing demonstrations have been completed successfully. The machine is operated manually.
Advantages: Best view of the torch and the slab; immediate recognition and removal of defects during the scarfing process.
The operator can react immediately.
Slabs of 90 t and above can be scarfed.
We are constantly upgrading and improving our gas technology. In the case of upgrades and improvements the retrofitting of machines with older gas systems is guaranteed. Current investigations: e.g. impulse scarfing.
For brown fume (FeO) reduction we offer our dedicated proprietary technology.
Type 009 Action
Type 009 Action
EVERTZ Hydro Descaling System
Scafed broad face of a slab
Scarfed edge area of slab
Technical Information
Scarfing of slabs
All-surface, narrow face and selective scarfing
at speeds between 8 and 25 m/min.
Scarfing widths from 100 mm to 450 mm.
Reduced oxygen consumption to 2400 Nm/h
Water-cooled torch with customized designs ensure long
service live.
Fast igniting through iron powder addition.
Torch manipulation guarantees max. capacity and
one time ignition.
Minimal ridge between the scarfing cuts. Scale free surfaces
thanks to a universal descaling system (proprietary process
of EVERTZ-Hydrotechnik).
Several selectable scarfing programmes with the same
torch — enabling among others the selection of the desired
scarfing depth.
Scarfing times
Scarfing one broad face of an approx. 45 t slab, having a length
of approx. 13 m, a width of 2000 mm and a thickness of
220 mm (= approx. 26㎡), takes approx. 6 minutes.
Capacities
Depending on the desired widths of the cut, capacities of more
than 100.000 t per month are possible.
EVERTZ Scarfing Car
The EVERTZ Scarfing machines were not sold one the market. Within the framework of complete scarfing service packages, the machines were operated by specially trained EVERTZ personnel. This service also included maintenance and repair and was paid on a price per square meter or tonne basis. EVERTZ guaranteed quality, performance and around-the-clock availability.
The custormer was relieved from the duty of keeping permanent stocks of spqre parts, as EVERTZ kept the necessary inventories of spare modules or even complete replacement machines.
Wherever costs play a role there was, and today there still is, no economic alternative to this EVERTZ approach.
E.Evertz himself wrapped the torch head with asbestos cloth in 1965
Test in the Langenfiled plant
A mobile oxygen plant and vaporizer provided sufficient and constant pressure
EVERTZ Scarfing Machine with Angled Torch
Subject: Automatic scarfing
Attached to this memo is a report by Dipl.-Ing. Stadler on scarfing tests performed on September 12, 1969. In this context I should like to refer to the confidential photocopies a test report of December 5, 1968.
...In any case we should pursue the develoment of a mechanized scarfing process using several burners with and without iron powder, like we developed about one-and-a-half years ago when we started our scaring activities in Langenfeld and performed tests with a bundle of oxygen bottles. The lack of the necessary oxygen supply pressure of 15 atu at that time induced me to install...
...iron powder feeding.
It's already more than 20 years ago!
MECHANICAL ENGINEERING
SURFACE TREATMENT
The mechanical engineering division of Egon Evertz KG has for many
years been dedicated to the solution of problems in connection with the
surface treatment of ferrous and non-ferrous metals products.
Due to our close relationship with the steel industry we have always obtai-
ned hands-on knowledge of the problems that are encountered by rolling
mill and steelplant operators.
Thanks to the development of a series of specialized scarfing, milling and
grinding machines it is now possible to process the above mentioned pro-
ducts economically, efficiently and at a high quality level.
These specialized surface conditioning tasks are performed at our own
facilities or, on request, at our many customers' sites domestic and
internationally.
Scarfing machine during bloom treatment
We would especially like to emphasize our expertise and capabilities in the surface treatment of high-quality, high-grade steel products.
Our technicians are available at any time to answer your questions and provide advice.
US Patent Granted
US Patent granted to Egon Evertz in 1973/1983
1973
US Patent granted to Egon Evertz in Scarfing Car
1983
CO2 injection for the reduction of fume generation
Not to be forgotten...
...that, besides EVERTZ in Germany, many years ago in France Dipl. -ing. Donze also pioneered the scarfing technology.He was a renowned and excellent specialist in the field of gas techenology - which is evidenced by the design of his gas nozzles.
Scarfing machine during bloom treatment
Systematic Layout of
the EVERTZ Scarfing Machine
Stationary Scarfing Machine Type 007
during Practical Operation
Set-up of the machine
Machine during operation
Part of th dedusting plant
Machine during operation
Feeding area of the scrafing machine
Loading of the scarfing car
Slab scrafed without hydro descaling system
Adhering slag can be removed by a small spatula