Mist Control at a Machining Center, Part 1: Mist Characterization

Details

• Personal Author:
  Deye GJ ; Heitbrink, William A. ; Spencer, Amy B. ; Yacher JM
• Description:
  At a machining center used to produce transmission parts, aerosol instrumentation was used to quantitatively study mist generation and to evaluate the performance of an air cleaner for controlling the mist. This machining center drilled and tapped holes at rotational speeds of 1000 to 3000 rpm. During most machining operations, the metalworking fluid (MWF) was flooded over the part. To facilitate metal chip removal during some operations, MWF was pumped through the orifices in some tools at a pressure of 800 psi. These machining operations were performed in a nearly complete enclosure that was exhausted to an air cleaner at a flow rate of 1.1 m3/sec (2400 ft3/m). Although the use of high-pressure MWF increased the mist concentration by about 200%, it did not affect the mist size distribution. The observed penetration through the air cleaner appeared to be mostly consistent with the manufacturer's specifications on the air cleaner's filters. During the testing, MWF was observed to accumulate in the bottom of the filter housing and may have been reentrained due to air motion or mechanical vibration. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollution Environmental Monitoring Manufacturing And Industrial Facilities Metals Metal Workers Occupational Health Safety
• Keywords:
  Aerosol Particles Air Monitoring Air Purification Air Quality Measurement Air Quality Monitoring Machine Operation Machine Operators Machinists Metal Workers Metalworking Metalworking Fluids Metalworking Industry

  More +
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  275-281
• Volume:
  61
• Issue:
  2
• NIOSHTIC Number:
  nn:20020695
• Citation:
  Am Ind Hyg Assoc J 2000 Mar/Apr; 61(2):275-281
• Federal Fiscal Year:
  2000
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b5f7bd7c0bf24f9b4ef191134029839d0bdf7201806ff3c2044e1d928af1bfae96d7b36da2345aca50b2425c46b4b082cdd5da6826c10f589c98f79f26c3b2c2
• Download URL:
  https://stacks.cdc.gov/view/cdc/198375/cdc_198375_DS1.pdf
• File Type:
  [PDF - 437.50 KB ]