Holding Iron Surface FCD 40 using Electrochemical Hard Chrome Method on Die-Cutting Two Tons
- February 16, 2021
- Posted by: RSIS Team
- Categories: Chemistry, IJRSI
International Journal of Research and Scientific Innovation (IJRSI) | Volume VIII, Issue I, January 2021 | ISSN 2321–2705
Holding Iron Surface FCD 40 using Electrochemical Hard Chrome Method on Die-Cutting Two Tons
Markus Malau1, Asrul Sani2
1Pancasila University, Jakarta, Indonesia
2 Pancasila University, Jakarta Indonesia
Abstract: – Material hardening is a process method that is carried out to make materials that begin with standards become stronger and more resilient. The material used is nodular cast iron (Ferro Casting Nodular (FCD)) which has a composition of above 2.06% carbon, tensile stress 40 kg / mm2, with elongation of 12 minutes, and has a material hardness of 201 (BHN). The method used to harden the surface is the electrochemical hard chrome process with added hardening material is chrome. Material is carried out by electrochemical diffusion by providing electrical voltage, as well as the addition of heat given, so that the material becomes harder.
The results of electrochemical hard chromium surface hardening can harden the surface better and harder, so that it is used in industry and society. Rockwell hardening value is 62.82 HRC equivalent to VHN 768 and BHN is 702.2. In this hardening process uses 270 amperes of electric current, with a temperature of 60ºC and a holding time of 20.
Keywords: Material, Electrochemical, Surface, Hardness, Hard Chrome.
I. INTRODUCTION
The development of reliable and up-to-date technology is the use of industrial materials that can be processed and developed by the industry to become equipment that is strong, reliable, and durable in use so that companies obtain equipment that is reliable, strong, in the production process, its utilization and profit, production. more and more quality. Heat treatment is the treatment/application of heat to the material to provide/change the physical properties of the material (Setiawan, 2012), then provide rapid cooling (using liquid media, very fast cooling, such as water, cooling air, granules). water (spray water) and so on to the material so that the material hardens rapidly starting from the surface to the core/middle of the material This process is called quenching (fast cooling) (Setiawan, 2012).
