A huge transformation is taking place in today’s automotive world. Electric cars, stricter emissions regulations and the desire for more efficient vehicles are driving the industry forward. However, one of the biggest challenges remains, the development and manufacturing of modern transmissions. This is where traditional engineering expertise meets the requirements of new, sustainable mobility.
Read here how Graphite Materials was able to help find a value-adding and reliable solution.
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Industry:
Automobile
Procedure:
Low-pressure carburizing with high-pressure gas quenching
Solution:
with optimized component nesting Services:
/ batch carriers / workpiece carriers / CFC fixtures / CC fixtures Result:
Significant improvement in the cases of the distortions
.
During the carburizing process, the components are heated to temperatures of around 900°C in the oven. This allows the carbon to diffuse from the process gas into the component surface. The component is then cooled quickly to fix the diffused carbon atoms in the structure of the surface.
The following challenges are requested to be considered:
carrier in a vacuum. The component positioning of the charging agent used was not optimal for series production. This led to an unacceptable deviation in concentricity. 
By a comprehensive analysis of the existing process, we identified various possibilities for optimization.
The positioning of the rings has been redesigned. In a series of tests, In a series of tests, 700 rings from four different batches were measured and evaluated after heat treatment on the optimized carrier. The shape and dimensional deviations were all within the required tolerances.
According to the optimized fixture design, the maximum values of the roundness deviation were reduced by 25 % and the average deviation by 50 %.
Not a single ring had to be declared as a reject.
The new fixture design was approved for series production and implemented as a new standard.
