December 2017 | Craftsman’s Cribsheet #61
Deputy director of OSHA’s Directorate of Enforcement Programs, Patrick Kapust, presented the agency’s preliminary list at the National Safety Congress and Expo on September 26 this year.
Author: Joe Jackson
November 2017 | Craftsman’s Cribsheet #60
Decarburization on surface layers can affect heat treatment and hardness attained on parts. Decarburization also provides evidence of where in a process a defect or imperfection occurred.
October 2017 | Craftsman’s Cribsheet #59
Busy machines and production lines are good, but even better are busy machines and production lines that are making the right product and making the
product right. This is one perspective on OEE – Overall Equipment Efficiency.
September 2017 | Craftsman’s Cribsheet #58
Machinability of different materials is generally expressed as a percentage compared with a known standard. Carbon and alloy steels are compared with 1212. So are stainless steels. Coppers, brasses and bronzes are compared with 360 Brass. The benchmark grade for aluminum is 2011 at 100 percent. Generally speaking, shorter chips equal better machinability
August 2017 | Craftsman’s Cribsheet #57
Failures of steel parts in service or production occur infrequently. However, when steel parts fail, the consequences are dire. Here are seven ways that steel can fail as a result of quench cracking from heat treatment.
July 2017 | Craftsman’s Cribsheet #56
“Stress cracks are defined as transverse or near transverse open crevices created when concentration of residual stresses exceed the
local yield strength at the temperature of crack formation. These stresses can be mechanically induced or attributable to extreme temperature differences and /or phase transformations. They can originate at almost any point in the manufacture of the steel.”– AISI Manual Detection, Classification and Elimination of Rod and Bar Surface Defects.
June 2017 | Craftsman’s Cribsheet #55
In “The Toyota Way,” author Jeffrey Liker lists and discusses the eight non-value-adding wastes that can be found in business and manufacturing processes. These can be applied anywhere, not just on a production line. Here is a look at these wastes through the lens of our precision machining shop processes.
May 2017 | Craftsman’s Cribsheet #54
We all know the importance of safety in our shops, so here are 12 simple rules to help eliminate accidents and injuries in the workplace:
Business Disaster Recovery Plan for PMPA Members
To help member companies serve their customers and to minimize any interruption of service, PMPA has developed a Disaster Recovery Plan Procedure. The Procedure will assist PMPA member companies facing unplanned disasters such as tornados, fires, flooding, etc. to provide means to keep the supply of critical machined products flowing during the emergency.
PMPA will provide assistance to requesting shops to find capable and qualified precision machining shops that are willing to assist in the production of parts during recovery.
PMPA Disaster Recovery Plan (Updated 2017)
April 2017 | Craftsman’s Cribsheet #53
Unleaded brasses are not necessarily harder to run than leaded brass. They are just different.