A Young Company with a Past

At the beginning of ALD's corporate history were two great entrepreneurs of vacuum technology: Wilhelm Carl Heraeus (1827-1904) and Ernst Leybold (1824-1907). They founded the two companies from which ALD emerged.

Here's a brief historical review:

Origins
 
 
1850
The family company, E. Leybold, was founded in "Cöln".
 
1851
The family company, W. C. Heraeus, was formed in Hanau.
 
1873
The company Degussa is founded in Frankfurt.
 
Milestones
 
 
1911
Independently of one another, the two companies make the breakthrough into industrial vacuum engineering. Leybold develops vacuum pumps.
 
1913
These include the first molecular pump in 1911 and the first diffusion pump in 1913. They blaze a trail for subsequent development throughout vacuum technology. During this period, W.C. Heraeus produces the first alloys under vacuum.
 
1925
From the cyanide salts required for the sheath process of precious metals, the heat treatment technique developed in molten salts. In the department Durferrit these salts are produced, Degussa manufactures furnaces ovens.
 
1952
Together with Degussa AG and Metallgesellschaft AG founds Leybold Leybold High Vacuum Systems GmbH.
 
1960
First shaft furnace for carburizing produced by Degussa-industrial furnaces.
 
1963
First vacuum annealing furnace manufactured by the Degussa-industrial furnaces.
 
1966
Fourteen years later, WC Heraeus founded in the field of vacuum technology in the high vacuum Heraeus GmbH. Then two companies merge to Leybold-Heraeus GmbH.
 
1968
First multi-purpose chamber furnace made ​​of case hardening by the Degussa-industrial furnaces.
 
1969
First pass sintering furnace prepared for uranium oxide fuel elements by the Degussa-industrial furnaces.
 
1971
First vacuum sintering furnace for hard metals by the Degussa-Industrieofenbau made​​.
 
1974
First pass sintering furnace for mixed-oxide fuel (uranium and plutonium) produced by Degussa-industrial furnaces.
 
1981
First vacuum chamber furnace prepared for tool hardening with 6 bar overpressure by the Degussa-industrial furnaces.
 
1984
Construction of the first 60 bars Sintered - HIP furnace for the manufacture of hard metal components by the Degussa-industrial furnaces.
 
1987
First vacuum chamber furnace for curing medium - made ​​alloy steels with 20 bar pressure using helium by the Degussa-industrial furnaces.
 
1991
Merger of Degussa business units Industrial Furnaces and Durferrit process and the range of vacuum metallurgy / industrial plant in the company Leybold Durferrit GmbH.
 
1994
From the joint venture Leybold-Durferrit GmbH ALD Vacuum Technologies GmbH, which developed as the third technological pillar, the vacuum thermal recycling occurs.

Restructuring of product lines, ALD focuses on the vacuum-based processing techniques. Introduction and expansion of vacuum thermal recycling techniques that are later awarded the Philip Morris price.
 
1995
Construction of the first "cold quenching" with a quenching pressure up to 40 bar and the use of helium for hardening of low alloy steels.
 
1996
For this innovation, ALD receives the 1996 Philip Morris Research Prize. This significant technical achievement was recently described in a book by Herbert Henzler and Lothar Späth.
 
1997
The 100 per cent takeover of ALD by a U.S. company, Safeguard International Fund L.P., provides crucial momentum for the expansion of ALD's corporate strategy which is implemented step by step in the years to follow.
 
1998
Construction of the first two-chamber furnace for hardening with propane and helium.
 
1998
Construction of the first two-chamber furnace for hardening with propane and helium.
 
1999
Unique technological acumen and long-standing market experience enable ALD to position itself in the vanguard of development in promising fields of future growth
 
2000
Foundation of ALD Lindgren in Toronto, Canada
Foundation of Thermal Treatment, Inc., Columbia, South Carolina
Foundation of liaison office in Shanghai
 
2001
ALD made the agreement for the construction of a heat treatment center in Columbia, South Carolina, USA
 
2002
Building the first furnace type ModulTherm Licenseagreemant with Yangcheng Fengdong intensivies business on the Chinese market.
 
2003
Cooperation agreement for the northamerican market with AFC Holcroft Cooperation for "Sprühformanlagen" with Osprey
 
2004
License agreement with Daido Steel Japan
 
2005
Foundation of ALD TT Port Huron Foundation of the joint venture ALD Holcroft together with the american company AFC Holcroft
 
2006
Start of production at TT ALD Port Huron.
 
2007
Foundation of ALD Tratamientos Termicos S.A. de C.V., in Ramos, Mexico Aquiring the former production facilities of CNH in Berlin(http://www.ald-imp.de)
 
2010
Interest in the company Dynatech Furnaces (http://www.ald-dynatech.com), Bombay and adoption of Mono 2TM technology from BP Solar.