Case hardening R.CARB+®, Carbonitriding, Carburisation
Process description: Carburisation Case hardening R.CARB+® During the carburisation procedure, the marginal Case hardening R.CARB+® is a combination of layer of a steel (usually case-hardened steels) is carburisation and hardening process including concentrated with carbon and subsequently slowly tempering. This results in a carburised marginal cooled in an inert gas atmosphere in order to area with a carbon content of 0.6 - 0.8%. The not achieve an increased hardness. This method carbon content decreases continuously towards allows the components to be processed, which is the core. The result of the hardening process is a then followed by the actual hardening process. An margin with a high hardness and a soft, tough core. advantage of this procedure is that it is possible with this sequence to manufacture components Carbonitriding with different case depths. Materials suited for the Carbonitriding differs from case hardening carburisation process are case-hardened steels R.CARB+® in terms of the addition of nitrogen. The with a carbon content below 0.25 w/w. marginal zone is concentrated with nitrogen in addition to carbon. This is followed by a hardening This is applied in the following sectors: process incl. tempering in order to achieve the → Tool manufacturing and mechanical engineering, desired characteristics. In comparison to case agricultural machinery, aerospace, etc. hardening R.CARB+®, the carbonitriding procedure provides the advantage that the hardenability is Materials: increased due to the nitrogen. Thus, unalloyed → Case-hardening steels with carbon contents steels (construction steels) can also be treated. As below 0.25 % w/w is the case with the case hardening, a hard, wear resistant marginal surface with a high strength and a tough core is the result of the carbonitriding procedure.
Case hardening R.CARB+®, Carbonitriding, Carburisation
Key characteristics: Necessary information: → Exact process control → Material specifications (thermocouples, online diffusion calculator, mass → Required surface hardness flow controller, quenching medium, etc.) → Subsequent processing steps (e.g. straightening, → Process parameters adapted to materials distortion control, burnishing) → Required hardness penetration depth, incl. Maximum furnace area: machining allowance → 1,050 x 690 x 700 mm (L x W x H) → Please indicate maximum warpage and/or reference points in case of possible straightening Maximum batch weight: operations → 1,100 kg gross weight → Areas must be protected prior to carburisation (covering) What is the primary purpose of application of this method: Observe the following in terms of the delivery → For adjusting the strength and toughness condition of the components: properties of the material → Component should be free from greases, oils, → Increase in surface hardness processing aids or drawing and casting marks → High wear resistance → Preferably avoid sharp edges and/or large cross- → Increased durability and reduced pressure sections requirements Important: Cycle duration: → A uniform surface cannot be ensured in unal- → See schedule list loyed case-hardening steels (e.g., C15). → Dimensional changes must be taken into consi- deration - please note that it must be manufac- tured with corresponding machining allowance
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