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Machined Fabrications Ltd, is a machining & fabrication company. Our extensive workshops and comprehensive range of Large CNC machine tools, modern tooling, and a highly skilled workforce support our commitment to consistently high standards of product and service.
The ability to complete the fabrication, machining, and surface finishing within our own plant enables us to provide a rapid, cost effective service allowing us to meet the specifications and demanding schedules required by our customers
Machined Fabrications Ltd. Machined Fabrications are very proud to announce that we have now attained the Steel Construction Certificate Scheme (SCCS) Weld Certificate and Factory Production Control Certificate confirming compliance and effective implementation of the Management System in accordance with the requirements of BS EN1090-1:2009, this falls in line with the new legal obligation that all fabricated structural steelwork is CE Marked.
We also have 4 large CNC machine shops that offer a wide range of large CNC machines at all used for Subcon Machining , the group consists of , Machined Fabrications Ltd , Ufone Precision Engineers Ltd and Adelaide Engineering Co Ltd & Askey Precision Engineering .
Our extensive workshops and comprehensive range of CNC machine tools, modern tooling, and a highly skilled workforce support our commitment to consistently high standards of product and service.
The ability to complete the fabrication, machining, Our Large CNC machines are operated by our highly skilled, experienced engineers excel at milling & turning. We have one of the largest ranges of modern CNC lathes in the country and these are available for subcontract work.
At Machined Fabrications we have been providing the Power Generation Oil & Gas and Petrochemical industry with the highest quality CNC Machining Services.
Large CNC Machining / Large CNC Milling / SubCon / Heavy /Medium / Precision CNC Machining /Subcontract
www.dgfeman.com/heat-treatment-of-precision-plastic-injec...
In the process of heat treatment, the precision plastic injection mold often produces deformation. In order to prevent this kind of problem, as long as we grasp the deformation law, analyze the causes, and adopt different methods to prevent the deformation of the mold, it can be reduced and controlled. In general, the following methods can be adopted to prevent the heat treatment deformation of precision injection mold.
(1) Reasonable selection of materials: the micro deformation die steel with good material should be selected for the precision plastic injection mold, the mold steel with severe carbide segregation should be reasonably cast and carried out, and the large and non-casting mold steel can be treated with solid solution double refinement heat treatment.
(2) The mold structure design should be reasonable, the thickness should not be too different, and the shape should be symmetrical. For the large deformation mold, we should grasp the deformation pattern and reserve the processing allowance. For the large ones, the combined structures of precision injection mold can be adopted.
(3) The precision injection mold should be pre-heat treated to eliminate the residual stress in the process of mechanical processing.
(4) Reasonably select the heating temperature and control the heating speed. For the precision injection mold, slow heating, preheating and other balanced heating methods can be adopted to reduce the heat treatment deformation of the mold.
(5) Under the condition of ensuring the hardness of the mold, the pre-cooling, staged cooling quenching or warm quenching process of the injection mold should be adopted as far as possible.
(6) For precision injection mold, vacuum heating quenching and cryogenic treatment after quenching shall be adopted as far as possible if the premise permits.
(7) The precision of some precision and complicated dies can be controlled by pre-heating treatment, aging heat treatment, quenching, tempering and nitriding heat treatment.
(8) When repairing sand hole, air hole, wear and other defects of mold, cold welding machine and other repair equipment with small heat influence shall be selected to avoid deformation in the repair process.
A few nice precision engineering services photos I found:
Red Arrows Show Group for 2014
Image by Defence Pictures
The Royal Air Force Aerobatics Group (RAFAT), The Red Arrows for the 2014 show season line up in front of one particular of their Hawk aircraft at RAF Scampton.
The Royal Air Force...
Read more about Good Precision Engineering Solutions pictures
(Source from Chinese Rapid Prototyping Blog)
Being extremely silly testing my ability to precisely toss and spin my camera. The object of the experiment was to match the spin of the ceiling fan blades so that they appear non moving while everything else moves.
The Church of Saint-Nizier (French: "Église Saint-Nizier") is a church in the Presqu'île district of Lyon, France, Its name refers to Nicetius of Lyon, a bishop of the city during the 6th century. Begun in the 14th century and only completed in the 19th century, the church contains a variety of architectural styles, ranging from the neo-Gothic spire to the classical Renaissance facade. In 1998, it was inscribed on the UNESCO World Heritage List along with other historic buildings in Lyon.
I went there on November 22, 2023, with my French FOCA camera type « PF3 » or ***, made in Châteaudun, Eure, France, year 1954. The OPLAR normal lens was equipped with a 42mm push-on FOCA (France) AUV filter plus a generic metal cylindric shade hood.
The camera was loaded with a Fomapan Creative 200 exposed for 160 ISO. Expositions were determined using a Minolta Autometer III with a 10° finder for selective measurements privileging the shadow areas. The weather was a bit dark and windy in the afternoon giving typical exposure from 1/50s to f/4.5 to 5.6 outdoor. Indoor in the church, I used the slow speed module of the FOCA at 1/10s an the full aperture f/2.8.
Eglise Saint-Nizier, November 22, 2023
69002 Lyon
France
After exposure, the film was processed using Adox Adonal (= Agfa Rodinal) developer at dilution 1+50, 20°C for 10min.
The film was then digitized using a Sony A7 body adapted to a Minolta Auto Bellows III and a Minolta Slide Duplicator using a lens Minolta Bellow Macro Rokkor 50mm f/3.5 at a reproduction ratio of 1:1. The reproduced RAW files obtained were processed in LR prior the the final JPEG editions.
All views of the film are presented in the dedicated album either in the printing framed versions and unframed full-size jpeg accompanied by some documentary smartphone Vivio Y76 color pictures.
About the camera and the lens:
This French FOCA camera type « PF3 » or ***, was made in Châteaudun, Eure, France, year 1954.
I got the set from a French dealer on eBay , including the camera and its normal lens OPLAR 1:2.8 f=5cm, a rare ever-ready bag Ref 120-503 « Luxe » with a upper compartment for three 42mm push-on filters. The bag is made of a pork leather and was in 1950 three times more expensive than a normal ever-ready bag. The set also included a FOCA view finder covering the field of a 3,5cm focal lens in its original grey and rd small FOCA box, a soft neoprene FOCA hood, three 42mm FOCA filters yellow x2.5, green x3.5, and orange x4. The kit also included a (used?) roll of Kodachrome-64 (DX-coded canister).
According to the serial number in 401.xxx, this PF3 should be a model-1 (version 5 or 6).
The camera was used very carefully and has been probably well serviced in the past. The OPLAR normal lens 1:2.8 f=5cm is a model-3 version-3 from 1954 too with the "ECD/9" diaphragm graduation 2.8...3.5...9....18.
The camera was originally sold to its first owner by « Photo-Plait » in Paris, France, one of the most important photo store, founded in 1910 and editing a well-know catalog of camera's for mail-order selling in France and overseas. Then the camera could have been sold either in the Photo-Plait store, 35-39, rue Lafayette, Paris 9ème or by mail-order selling.
When I first detailed the camera, I soon realized that it is almost pristine with very little signs of a very careful use. All functions works flawlessly, including the slow shutter speeeds and the shutter curtains are as new. The view finder and range finder are very clear and contrasted as the day 1. The lens is also very nice condition.
The FOCA PF3 is essentially the same camera as the type PF2B (PF for "Petit Format") constructed in France by the company "Optique & Precision de Levallois" (OPL) starting from 1947. The difference lies in the built-in slow speed mechanism giving 1/10s, 1/5s, 1/2s and 1s exposition times, plus the T-mode. It was manufactured in the Châteaudun OPL factory, route de Jallans, France. The factory, constructed in 1938, is still at the same place under the name of SAFRAN now producing precision devices for aerospace appliances.