Approved Hardening or High Speed Salt Line Operator

Controls one or more furnaces to heat treat metal parts according to written specifications.

  • Reports to the Shift Supervisor.
  • Interfaces with Salt Line Tempering Operators, Straighteners, Finishing Operators, Production Manager, Supervisors, QC Manager and Manager of Technical Development and Training.
  • Places parts into racks, trays, or baskets, to make a load for the furnace. Wires parts per requirements.
  • Transfers the load into the furnace using material handling equipment (overhead cranes, forklifts, transfer carts, roller tables, etc.)
  • Adjusts furnace temperature by setting control instruments or other means used by the furnace to control the temperatures.
  • Responsible for putting tempering product in designated furnace.
  • Maintains lot integrity.
  • Responsible for housekeeping.
  • Assuring that the load reaches the specified temperature for the specified length of time before it is removed from the furnace.
  • Transferring the load from the furnace to the next step in the process.
  • Transferring parts when required, to the furnace where it is quenched in oil, hot salt, water or air.
  • Removes parts from the furnace.
  • Responsible for setting times and temperatures according to specifications.
  • Minimal handling of hazardous waste.
  • Responsible for reporting defective material and assisting in corrective actions.

Job Requirements (in an 8 hour workday)
(Total hours not to exceed daily hours worked) 

    Number of Hours - Full Capacity
    1 2 3 4 5 6 7
A Sitting              
B Standing       X      
C Walking       X      


    Occasionally Frequently Repeatedly Continuously
    1-2 Hours 3-4 Hours 5-6 Hours 7 + hours
A Bending X      
B Squatting/Stooping X      
C Climbing X      
D Reaching above shoulder X      
E Pushing/Pulling   X    

Repetitive Foot Movements Used
(Such as operating foot controls)

1-2 Hours 3-4 Hours 5-6 Hours 7 + Hours
A Left N/A
B Right N/A


    Carried Lifted Number of Hours
    Yes/No Yes/No 1-2 3-4 5-6 7 +
A Up to 10 lbs. Y Y     X  
B Up to 25 lbs. Y Y X      
C Up to 50 lbs. Y Y X      
D Up to 75 lbs. Y Y X      

Repetitive Hand/Arm Action Such As

    Right Left Number of Hours
    Yes/No Yes/No 1-2 3-4 5-6 7-8
A Grasping Y Y X      
B Pinching Y Y X      

Job Requires

    Yes No
A Working on uneven ground.   X
B Working with moving machinery and equipment. X  
C Exposure to marked changes in temperature and humidity. X  
D Driving automotive equipment, forklifts and other equipment. X  
E Wearing of personal protective equipment. X  
  Respirator   X
  Earplug   X
  Steel toe shoes X  
  Safety glasses X  
  Face shield X  
  Gloves X  

Employment Requirements

  • High school diploma or GED.
  • Must be 18 years or older.

Description of exposure to dust, fumes, gasses, smoke, noise and other.
Heat from furnaces, minimum exposure to smoke from furnaces. Caution with chemicals.

Training Requirements
Certification as an Approved Salt Line Operator that includes approval as a SKF Operator, High Heat Operator and Tempering Operator will be given upon completion of:

  • Theory and hands on training over a 9 month period in addition to passing a Salt Line Test.
  • Completion of 6 months of training and testing for Time, Temperature and Tolerance.
  • Completion and testing at 3 and 6 month intervals for Inspection.
  • Completion of specified moving equipment training.
  • Satisfactory completion of equipment refresher checks at designated intervals.
  • Completion of theory and hands-on training for new processes where applicable.
  • Annual training in JASCO Heat Treating’s safety and environmental policy.

During the training process the employee will be classified as a Salt Line Operator. Upon completion of training requirements the employee will earn the title of Approved Salt Line Operator.

Note: The Salt Line Operator can complete training and be certified as either a “Hardening Operator”, an “Approved High Speed Salt Line Operator”, or both.

This list is not intended to be all inclusive and may be expanded to include other duties or responsibilities that management may deem necessary from time to time.

JASCO Heat Treating, Inc. is an Equal Opportunity Employer

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