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The main idea behind Yamada quality assurance is to provide a product that customers the world over can use with peace of mind.
All of the plants in the Yamada group, both in Japan and overseas, have achieved certification of the internationally recognized ISO 9000 series. Thus by establishing outstanding quality assurance systems and then by maintaining them, we are able to assure the quality of each and every part manufactured.
 ISO certification |
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Registration
date
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Certified factory |
Certification standard
registration number |
| 1997.3.28 |
YOTEC(YNA/U.S.A) |
ISO9002 EAGLE-235 |
| 1999.1.25 |
The domestic whole company |
ISO9001 JMAQA-256 |
| 1999.2.10 |
YEC(U.K) |
ISO9002 Q50212 |
| 2000.10.5 |
YEC(U.S.A) |
QS9000 Q50212 |
| 2000.10.19 |
YTC(CHINA) |
ISO9002 5100/20005514 |
| 2001.3.22 |
YSC(THAILAND) |
QS9000 01 101 006526 |
| 2009.2.24 |
All domestic Divisions acquired the certification. |
ISO/TS 16949:2002 |
*See the ENVIRONMENT page for information about the ISO14000 series |
| Realization of Total Quality Assurance at Each Production Process |
The main products made by Yamada Mfg., functional parts for automobiles, are especially central to the driving experience due to their impact on safety and comfort. Accordingly, these partsŐ characteristics, like dimensions, strength, material internal structure and internal stress, etc. require extremely high precision. In order to provide Yamada customers with 100% satisfaction, a quality assurance system that is strict, yet efficient, is implemented from the initial developmental stages to the shipment of the final product.
| Quality assurance at the design stage |
| Multiple Cycle Testing Equipment |
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| In order to generate the environment in which our products will be used, tests are carried out to determine their level of corrosion fatigue resistance. |
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Thermal Vibration Tester |
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| In order to determine the thermal shock vibration resistance of our products,tests are carried out in conditions approximating those of the actual mounting situation. |
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Flow analysis |
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| Flow analysis of molten Aluminium is being used in order to design ever improved dies. |
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Micro-analyzer |
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| By using electron microscopes and analyzers, we are able to take advantage of minute analyses of the conditions of material surfaces. |
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| Optical emission spectrochemical analyzer |
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| A elemental analysis of aluminum and metal materials is carried out in order to confirm that these materials meet industrial standards. |
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| Quality assurance during steps in the manufacturing process |
Oil pump
automatic assembly line-1 |
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| During the assembly process, products are moved on conveyors during the various steps of processing automatically on their way along the assembly line as they undergo automatic assembly. Quality control equipment is installed along the lines in strategic locations in order to check the quality of each item. |
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Oil pump
automatic assembly line-2 |
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| Cameras are used to carry out high precision automatic inspections. |
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Oil pump
automatic assembly line-3 |
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| Oil pumps that have completed the assembly process are tested to confirm that their performance complies with our standards. |
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| Half-shaft assembly line-1 |
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| On the assembly lines, equipment is installed that provides quality assurance in each strategic location. |
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| Half-shaft assembly line-2 |
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| During each process of the assembly operations, the workmanship of each product is measured automatically, and only those products that comply with our standards for quality move on to the next process in the operation. |
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