Skills Cultivated through Experience

Understanding the Needs of Our Age and Continuing to Produce New Value

NGK began in 1919 as a porcelain insulator manufacturer to help Japanese society modernize by meeting the growing demand for electricity accompanying the technological development of industry and the lives of the people.
Since then, NGK has used the technological capacity we’ve cultivated through the manufacture of high-quality and reliable insulators to actively work towards the diversification and globalization of our business, and to realize sustainable growth through the production of numerous products that support industry and the lives of the people in our community, as well as assist in solving complex social problems.
NGK will continue to provide the world with new value through advanced manufacturing that meets the needs of our age.

Skills Cultivated through Experience

Skills Cultivated through Experience

Our strengths lie in the growth of our business with the skills we have developed since our founding and the people that support that growth.

Since our founding, we have leveraged our diverse set of skills to develop and offer products that support the infrastructure of society and assist in the solving of environmental problems. It’s our people that are the bedrock of our strength, and their mentality to relentlessly pursue quality, to continue to push the envelope, and to give back to society has continued unabated from our founding up to today.

Pushing the envelope globally and in new fields

NGK goes right back to 1876, when Ichitaro Morimura (Ichizaemon VI) and his younger brother, Toyo, founded Morimura Gumi (currently Morimura Bros., Inc.). In an age when Japan was beginning to modernize, the Morimura brothers were pioneers in globalizing Japan and blazing a trail for Japan-US trade. NGK, having started as an insulator manufacturer, began to develop acid-resistant machinery for use in the chemical industry soon after our founding; we then actively engaged in diversifying and globalizing our business by making our first export of power transmission insulators to India in 1935 and establishing our first overseas production facility in 1973. Even now, we continue to constantly push the envelope in new fields and strive for sustained growth.

Pushing the envelope globally and in new fields

The pursuit of quality

Ceramics, which are largely determined by natural phenomena like soil, water, and fire, were originally extremely difficult to make with any uniformity. However, with insulators, which have served as the supporting framework for society’s lifeline for decades, even a single defective product could have an enormous impact on all of society. For NGK, which broke away from the ceramic ware-making industry and began down the path of industrial manufacturing with insulators, product uniformity was the sought after quality. By refining our core techniques with materials and processes to achieve this, we have continued to provide high quality and reliable products. NGK’s manufacturing is made possible by our commitment to quality and our technical capacity.

The pursuit of quality

Contributing to society

During the Meiji Period when electricity first began spreading throughout Japan, insulators that could withstand high voltage had to be imported. The first president Kazuchika Okura stated, “It is our duty to our country to produce insulators in Japan.” Research and development into special high-voltage insulators and the first Japanese insulators began from this keen sense of duty and clues from shards of US-made insulators.
Our founding spirit—the urge to contribute to the development of industry and the lives of the people by meeting the growing demand for electricity with a stable supply of high-quality insulators—continues today still in NGK’s corporate philosophy.

Contributing to society

Our Core Techniques

Materials techniques

Our materials techniques draw out synergistic effects through the combination of differing materials, rapidly produces ceramics with outstanding qualities, and controls properties like ceramic pore diameter (pore size), crystal orientation, thermal conductivity, ion conductivity, and electrical resistance. With our thorough familiarity with the mechanical, thermal, electrical, and physical properties of ceramics, and our adept manipulation of materials into a plethora of configurations, we are able to manufacture just the right products to meet the needs of society.

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By controlling the pore size, ceramic filters can screen out fluids and gases at the molecular leve

Process techniques

NGK is adroit at using various molding techniques, such as mold casting, extrusion molding, and tape molding, as well as firing and processing techniques, to achieve a variety of ceramic structures, and we also bind differing materials, such as metals, to ceramics. We develop and manufacture our products of various configurations—everything from fine and complex three-dimensional shapes to the one of the largest porcelain products in the world at 11.5 meters.

Mold casting differs from the conventional casting method where clay was formed and fired in that it is an entirely new molding method where a liquid material is introduced to a mold, and simply cooled and hardened. This method allows for complex and highly-precise shapes.

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Production techniques

The many innovative and competitive products NGK produces come from the production equipment that we have developed using our own mass production techniques and manufacturing know-how. In order to meet the needs of our customers around the world, we quickly deploy to our overseas locations the cutting-edge production lines we have developed and we promptly build highly efficient global production systems. Additionally, rapidly introducing an analysis of big data into production management leads to improvements in quality and reductions in cost.

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Improvements to productivity through innovative mass production processes

Evaluative/analytical techniques

We are constantly working to innovate in manufacturing by rapidly incorporating, fusing with our own core techniques, and advancing the latest technology, including advanced computer simulation technology that enables significant reductions in development periods and image inspection technology that never fails to overlook even the slightest defects.

Research & development, and manufacturing that utilizes superior evaluative/analytical technology

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The people who underpin manufacturing

We build comprehensive educational programs so that each and every one of our employees can gain the ambition to try new things, work to build an environment of growth, and demonstrate their best performance. We are concentrated on the full training of the people who form the bedrock of our production infrastructure.

Two months after our founding, a policy to allow employees to use the skills they have in a welcoming environment was promptly created that held the development of business as the same as the advancement of happiness of the workers.

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We provide products/services that contribute to solving various social issues by freely manipulating materials and properties.

Our major strength is our ability to produce a variety of products by combining our techniques with materials, such as porous ceramics and functional ceramics, with our own process techniques involving molding, firing and processing.
NGK products, adept at freely controlling unseen factors, such as electricity and heat, make solid contributions to society in the places we don’t often see to help create a better environment, a future for energy, and the advancement of electronics.

core Technology

core Technology

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Skills Cultivated through Experience