By Reed Miller
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Com - May 2011 47 FEATURE | Sintering/ Powder Metallurgy Fig. 3. In replacement of a complex assembly, LayerWise produced a single burner component containing nine undercuttings and six internal cavities. Fig. 4. Usually, the products leaving the facility cannot be produced any other way. Shape complexity is not charged because the production cost is dependent on the weight of the part. ” A specific example is the burner component produced for Diametal. Similar to machine manufacturers for food and pharmaceutical companies, this company is regularly challenged with producing complex circulation pieces such as mixers, inlet and outlet components, dispensers, coupling parts and heat exchangers.
The power module supplies two in-line forging coils and accurately heats the billets to 2250ºF at a nominal rate of 300 pieces per hour. Process control is enhanced by IHAZ™ (induction heat-affected zone) temperature-modeling software, which allows for customized billet temperature profile to best suit the customer’s ideal billet heating specifications. com Melting Furnaces Brazilian furnace manufacturer Metaltrend sold aluminum melting and holding furnaces for the new casting and rolling line to be installed at Novelis Brasil’s Pindamonhangaba plant.
14. Dissociation of ammonia and nitrogen pickup in steel during gas nitriding[4] N Diffusion Fig. 15. % NH3 in H2 atm) 1 3 10 30 60 80 0 100 V = Furnace volume Consequently, the nitrogen activity is a function of the number of ammonia molecules dissociated at the steel surface per unit of time. At constant pressure and temperature, the degree of dissociation is reduced as the flow rate increases, but the product (a · v) increases and so does aN. Thus, the nitrogen potential (KN) derived from equation 4 can be expressed as: KN = pNH3 / (pH2)3/2 (6) The amount of white layer can be controlled by minimizing the nitriding potential.
