Contact Details

Telephone:
011 053 7725

Fax:
072 564 9501

Email Address:
info@jmantechserv.co.za

Street Address:
Office 111 Bophelong Center, ACnr 5th Ave & 4th St, Springs CBD. Gauteng

 

What They Say

"Building Trust?"

Tadi

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Journeyman Technical Services

"Building Trust"

What is Scraping?
"Scraping Services, Consultancy Services, General Engineering Services"

Metal scraping is a technique for removing, progressively and in a controlled way,
very thin layers of metal from the high areas of a surface, making it increasingly
even until it reaches a very high degree of flatness.Think of a metal surface as having
high and low areas, like miniature hills and valleys of a terrain. With each
scraping pass you remove some material from the peaks, and so make them lower.
After a sufficient number of passes, you will have brought the peaks down to the
level of the valleys, and the surface will have become flat.
Scraping is generally considered in two categories: tooling and
machine tool bearing surfaces or ways. There are other reasons for scraping,
but these two categories should cover most other applications.
The objective in hand scraping is to remove material from a part to alter
its geometry so two surfaces will match each other. We use such tools as a
straightedge, surface plate, or other master gage, to match to another surface.
We also match any other two mating surfaces by hand scraping.
The purpose of tooling scraping is to generate tools to be used in
scraping other components. Straightedges, surface plates, and angle plates
must be scraped to a known master. To generate this master flat plane, the
system of “symmetrical distribution of errors" is employed. A flat plane will
be attained by cross matching three surface plates that are square.
Scraping Advantages
• Delivers tight tolerances due to geometric precision that aligns components within a millionth of an inch
• Ensures that the components of a machine’s foundation are mated perfectly for unparalleled accuracy and longevity
• Creates ideal flatness, which erases rocking and adds consistency when tightening
• Develops oil pockets, which hold oil on mated surfaces when in use

Area of specialisation
Jman specialises in the art of scrapping surfaces to produce perfect finish required for precision finished surfaces in addition to offering general engineering services and Trainning.

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Social development
Jman Tech fully subscribes to the development of previously disadvantaged individuals, in terms of race, gender and disabilities. this policy is to directly and indirectly develop skills by: offering training upgrading skills on job mentoring.

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Jman Tech fully subscribes to the development of previously disadvantaged individuals, in terms of race, gender and disabilities. this policy is to directly and indirectly develop skills by: offering trainning upgrading skills on job mentoring . We ensure that we deliver professional efficient and reliable service to our clients .

What We offer

Scraping Services, Consultancy Services, General Engineering Services