Grinders and Brazers of Hard Metal and Stellite

  • Katri SuuronenEmail author
  • Markku Linnainmaa
Reference work entry


Hard metals consisting mainly of tungsten carbide and cobalt and stellite consisting of cobalt, chromium, and tungsten carbide are used in applications where considerable hardness or high surface stability is required. Grinding of hard metal and stellite takes place either in a dry or wet process, the latter entailing water-miscible metalworking fluids (MWF). Brazing is a process where solid or powder form metal is melted to form hard metal or stellite pieces or to bind them to another material. Hard metal workers include those manufacturing hard metal blades or other products and those maintaining them. Skin contactants encountered in hard metal work include metals, constituents of MWFs, protective gloves made of various materials, as well as a number of skin-irritating factors such as dirty work, abrasion, and wet work. Noteworthy skin exposure to cobalt may take place both in dry and wet processes.


Hard metal Stellite Cobalt Chromium Nickel Metalworking fluid Cutting fluid Grinding Formaldehyde Antimicrobial Alkanolamines Grinding Brazing Wet work Saw blade 


  1. Einarsson O, Kylin B, Lindstedt G, Wahlberg JE (1975) Chromium, cobalt and nickel in used cutting fluids. Contact Dermatitis 1:182–183CrossRefGoogle Scholar
  2. Einarsson O, Eriksson E, Lindstedt G, Wahlberg JE (1979) Dissolution of cobalt from hard metal alloys by cutting fluids. Contact Dermatitis 5:129–132CrossRefGoogle Scholar
  3. Fischer T, Rystedt I (1983a) Skin protection against ionized cobalt and sodium lauryl sulphate with barrier creams. Contact Dermatitis 9:125–130CrossRefGoogle Scholar
  4. Fischer T, Rystedt I (1983b) Patch testing with sodium tungstate. Contact Dermatitis 9:69–73CrossRefGoogle Scholar
  5. Fischer T, Rystedt I (1983c) Cobalt allergy in hard metal workers. Contact Dermatitis 9:115–121CrossRefGoogle Scholar
  6. Fischer T, Rystedt I, Lagerholm B (1985) Hand eczema among hard metal workers. Am J Ind Med 8:381–394CrossRefGoogle Scholar
  7. Flint GN (1998) A metallurgical approach to metal contact dermatitis. Contact Dermatitis 39:213–221CrossRefGoogle Scholar
  8. Geier J, Lessmann H (2006) Metalworking fluids. In: Frosch P, Menne T, Lepoittevin JP (eds) Contact dermatitis. Springer, Heidelberg, pp 569–581CrossRefGoogle Scholar
  9. Julander A, Skare L, Mulder M, Grander M, Vahter M, Liden C (2010) Skin deposition of nickel, cobalt, and chromium in production of gas turbines and space propulsion components. Ann Occup Hyg 54(3): 340–350PubMedGoogle Scholar
  10. Klasson M, Bryngelsson IL, Pettersson C, Husby B, Arvidsson H, Westberg H (2016) Occupational exposure to cobalt and tungsten in the Swedish hard metal industry: air concentrations of particle mass, number, and surface area. Ann Occup Hyg 60(6):684–699CrossRefGoogle Scholar
  11. Koponen M, Gustafsson T, Kalliomäki P-L (1982) Cobalt in hard metal manufacturing dusts. Am Ind Hyg Assoc J 43:645–651CrossRefGoogle Scholar
  12. Kumagai S, Kusaka Y, Goto S (1996) Cobalt exposure level and variability in the hard metal industry of Japan. Am Ind Hyg Assoc J 57:365–369CrossRefGoogle Scholar
  13. Lidén C, Bruze M, Menné T (2006) Metals. In: Frosch P, Menne T, Lepoittevin JP (eds) Contact dermatitis. Springer, Heidelberg, pp 537–568CrossRefGoogle Scholar
  14. Linnainmaa M (1995) Control of exposure to cobalt during grinding of hard metal blades. Appl Occup Environ Hyg 10:692–697CrossRefGoogle Scholar
  15. Linnainmaa M, Kiilunen M (1997) Urinary cobalt as a measure of exposure in the wet sharpening of hard metal and stellite blades. Int Arch Occup Environ Health 69:193–200CrossRefGoogle Scholar
  16. Linnainmaa M, Kangas J, Kalliokoski P (1996) Exposure to airborne metals in the manufacture and maintenance of hard metal and stellite blades. Am Ind Hyg Assoc J 57:196–201CrossRefGoogle Scholar
  17. Linnainmaa M, Susitaival P, Mäkela P et al (1997) Respiratory symptoms and dermatoses among grinders and brazers of hard metal and stellite blades. Occup Med 47:33–39CrossRefGoogle Scholar
  18. Meyer-Bisch C, Pham QT, Mur JM et al (1989) Respiratory hazards in hard metal workers: a cross sectional study. Br J Ind Med 46:302–309PubMedPubMedCentralGoogle Scholar
  19. Midander K, Julander A, Skare L, Liden C (2014) Cobalt skin dose resulting from short and repetitive contact with hard metals. Contact Dermatitis 70(6):361–368CrossRefGoogle Scholar
  20. Ruokonen E-L, Linnainmaa M, Seuri M et al (1996) A fatal case of hard metal disease. Scand J Work Environ Health 22:62–65CrossRefGoogle Scholar
  21. Scansetti G, Botta GC, Spinelli P et al (1994) Absorption and excretion of cobalt in the hard metal industry. Sci Total Environ 150:141–144CrossRefGoogle Scholar
  22. Shirakawa T, Kusaka Y, Fujimura N et al (1990) Hard metal asthma: cross immunological and respiratory reactivity between cobalt and nickel. Thorax 45:267–271CrossRefGoogle Scholar
  23. Sprince NL, Oliver LC, Eisen EA et al (1988) Cobalt exposure and lung disease in tungsten carbide production. A cross-sectional study of current workers. Am Rev Respir Dis 138:1220–1226CrossRefGoogle Scholar
  24. Stebbins AI, Horstman SW, Daniell WE et al (1992) Cobalt exposure in a carbide tip grinding process. Am Ind Hyg Assoc J 53:186–192CrossRefGoogle Scholar
  25. Teschke K, Marion SA, van Zuylen MJA et al (1995) Maintenance of stellite and tungsten carbide saw tips: determinants of exposure to cobalt and chromium. Am Ind Hyg Assoc J 56:661–669CrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Occupational MedicineFinnish Institute of Occupational HealthHelsinkiFinland
  2. 2.Material and Particle ResearchFinnish Institute of Occupational HealthTampereFinland

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