ABOUT US

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The objective is to make our company a sought-after global brand in domestic and foreign markets, to constantly review our production capacity and to evaluate its growth potential, by fully placing the understanding of 'Total Quality Management' in our management philosophy and industrial relations.

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To provide satisfactory and sustainable profit to our partners, to continuously improve our performance by following modern production and product technologies, to be a company that maintains its superior success in competition and to question whether everything we do contributes to quality, cost and customer satisfaction.

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Our company has adopted the principle of providing reliable and trouble-free service to its customers with its expert managerial staff and technical personnel in the heat treatment of steel and non-steel metals. Our employees, who have adopted the team spirit and work with devotion, are the basis of our quality. The guarantee of the continuity of our quality is our meticulous work and the service we offer. Our 'Quality Policy' is to accept customer satisfaction as the first target by applying continuous development and improvement in all units, to fulfill the requirements of ISO 9001 Quality Management System Standard, to comply with applicable conditions and to continuously improve its effectiveness.

TECHNOLOGIES & SERVICES

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VACUUM QUENCHING

Encompassing the processes enabled by the Dönüşüm Heat Treatment, this process provides precise process control, superior quality standards, consistent hardness on the surface and core of the materials, high strength and optimum component framework. -No color changes -High level of reproducibility -Increase in corrosion resistance compared to atmospheric environment -Avoiding oxidation -Getting results faster -Providing oven control with the help of computers is one of the main reasons for choosing vacuum furnaces.

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GAS NITRIDING

It is the process of spreading nitrogen over the surface of the material to create a hardened surface. These processes are most commonly used on low alloy steels. Generally, nitrogen-rich ammonia is used in the nitration process. When ammonia comes into contact with metal at high temperature, it decomposes into Nitrogen and Hydrogen. Nitrogen diffuses to the surface of the material and forms a nitride layer. In this way, the surface of the material and its depth up to a certain point reach a very high degree of hardness compared to the core under the influence of the nitride layer. The nitration process is generally; gears, crankshafts, camshafts, valve parts, die casting parts, forging dies, gun parts, extrusion and rolling dies, injectors and plastic mold tools.

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VACUUM NITRIDING

In this process, which works similarly to vacuum irrigation, ammonia gas is supplied to the furnace with the help of precision-controlled furnaces. The main purpose of introducing ammonia gas in a vacuum environment is to distribute the nitration layer evenly over the entire surface. One of the reasons for choosing vacuum nitration is that it gives a more homogeneous and equal hardness value on the whole surface compared to gas nitration.

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OIL CARBURIZING UNDER VACUUM

Carburization to increase the surface hardness of low carbon steel is usually done openly to the atmospheric environment. As a result, homogeneity in the vacuum environment cannot be achieved and carbon deposits differ in different parts of the metal. This can lead to undesirable events in the material. In the oil process performed under vacuum, unlike vacuum cementation, the cooling process is done with the help of oil used in atmospheric environment instead of nitrogen. In such furnaces, quenching processes can also be carried out under vacuum. The cementation process takes place with the help of hydrocarbons given to the surface of the metal part. Hydrocarbons are separated into their components in order to be more stable at high temperatures. Hydrogen gas does not react with the metal and forms its own molecule. The carbon element diffuses to the surface of the metal and spreads there. It differs in the depth achieved inside the metal, depending on the temperature and the pressure of the gas. (BMI OVEN WITH ALLCARB TECHNOLOGY)

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GAS CARBURIZING

Gas carburizing is a surface hardening process generally performed at an elevated temperature above 925 degrees Celsius. Carburizing is essentially the addition of carbon to the surface of low carbon steels at suitable temperatures. Surface hardening is achieved by quenching the high carbon surface layer, which has good fatigue and wear resistance. Gas carburizing process, which is carried out in atmospheric environment, is a process that is mostly applied in cases where hardness is required only on the surface while maintaining the toughness of the steel.

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STRESS RELIEF ANNEALING

Stress relieving is the technique of removing or reducing the internal stresses that occur in metal. These stresses can occur in a variety of ways, from cold working to uneven cooling. Stress relieving is usually accomplished by heating a metal below its low critical temperature and then cooling it uniformly.

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NORMALIZATION

Normalization is a technique used to achieve uniformity in grain size and composition of a material. It is usually made for austenitized and air-cooled ferrous alloys. Normalization process; The critical temperature of the steel is increased by about 50 degrees, it is made by cooling it in the atmospheric environment after it is kept at that temperature for a certain period of time.

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AGING

Some metals are classified as precipitation-hardening metals. When a precipitation-hardening alloy is quenched, the alloying elements are kept in solution, resulting in a soft metal. Aging a "dissolved" metal allows alloying elements to diffuse throughout the microstructure and form intermetallic particles. These intermetallic particles will nucleate and fall out of solution and act as reinforcement phase, thus increasing the strength of the alloy. Alloys; It can be divided into naturally aging, meaning that precipitates form at room temperature, and artificially aging, meaning they form precipitates at elevated temperatures. 2000, 6000 and 7000 series aluminum are some of the materials that can be hardened in this way.

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RE-CRYSTALIZATION

In this annealing, which is done in order to regulate the changing microstructure of cold-worked metals, the material is brought to a temperature where it will be recrystallized and kept there for a while. The material, which becomes more rigid but brittle after plastic deformation, is repaired with the help of heat in this region, providing a more homogeneous microstructure. While the hardness and strength of the materials coming out of this process decrease, their ductility increases. It is of great importance to perform the recrystallization process in order not to damage the material after plastic deformation.

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TEMPERING

Although untempered martensitic steel is very hard, it is in a rather brittle state because of its low toughness and ductility. This is an undesirable situation for most industries. In this case, tempering is applied to the martensitic steel. This application, which is applied to almost all of the materials after quenching, is done in a way that gives the steel sufficient toughness. This application, which is applied at a level lower than the sub-critical temperature of the steel, is made between 180 degrees and 690 degrees depending on the desired properties.

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SUB-ZERO

Although martensitic transformation is expected in the microstructure of the steel after quenching , the entire austenitic structure may not be converted to martensite. After the quenching process, which is carried out immediately after the sub- zero process, the tempering process is performed. As a result of this process, in steel; wear resistance, hardness increase while internal stresses decrease. Applied materials generally include high carbon and high alloy steels.

QUALITY CONTROL

Our company has adopted the principle of providing reliable and trouble-free service to its customers with its expert managerial staff and technical personnel in the heat treatment of steel and non-steel metals. Our employees, who have adopted the team spirit and work with devotion, are the basis of our quality. The guarantee of the continuity of our quality is our meticulous work and the service we offer. Our 'Quality Policy' is to accept customer satisfaction as the first target by applying continuous development and improvement in all units, to fulfill the requirements of ISO 9001 Quality Management System Standard, to comply with applicable conditions and to continuously improve its effectiveness.

- Hardness measurements of materials ( Vickers - Brinell - Rockwell )

- Depth measurements of materials ( MikroVickers)

- Metallographic examination of materials with an optical microscope

- Non-destructive testing

- Damage analyzes

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QUALITY CONTROL LABORATORY

CONTACT INFORMATION

CONTACT US

ITOSB 3.CADDE NO:10 KAT:3
TUZLA / İSTANBUL
+90 216 593 23 22
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