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2025/06/30

We warmly and sincerely invites friends from home and abroad to the company for discussion and guidance!

We warmly and sincerely invites friends from home and abroad to the company for discussion and guidance!

Unity, pragmatism, innovation, and development, with relentless pursuit, customers first, taking science and technology and human resources as core and internal driving forces, and new product development and marketing as primary driving forces, we strive to build a nationally renowned enterprise.

We warmly and sincerely invites friends from home and abroad to the company for discussion and guidance!

2025/06/30

Brake drum maintenance and care

Brake drum maintenance and care

After prolonged use, uneven wear may appear on the brake rotor surface, which can cause noise and vibration during braking, and in severe cases, affect braking performance.

Brake drum maintenance and care

2025/06/24

Brake disc maintenance and care

Brake disc maintenance and care

Regularly clean the brake discs, remove oil stains, dirt, and other impurities adhering to the surface, to avoid affecting braking performance. Be sure to use a special cleaning agent to prevent corrosion of the brake disc surface.

Brake disc maintenance and care

2025/06/18

Precautions for brake disc use

Precautions for brake disc use

Regularly check brake disc thickness: Brake discs gradually wear out during use, and they must be replaced when their thickness falls below the manufacturer's specified limit.

Precautions for brake disc use

2025/06/10

Routine inspection of brake discs

Routine inspection of brake discs

Regularly check brake disc thickness: Brake discs will gradually wear during use, and must be replaced when their thickness falls below the manufacturer's specified limit.

Routine inspection of brake discs

2019/08/21

Basic knowledge of brake discs

Basic knowledge of brake discs

Currently, brakes include disc brakes and drum brakes. Many older cars have front disc and rear drum brakes. Many current cars have disc brakes on both front and rear wheels. Because disc brakes have better heat dissipation than drum brakes, they are less prone to heat fade during high-speed braking, thus providing good braking performance at high speeds. The principle of brake discs is: braking mainly comes from friction. By utilizing the friction between the brake pads and the brake disc (or drum), and between the tires and the ground, the kinetic energy of the moving vehicle is converted into thermal energy generated by friction, thus stopping the car. A good braking system can provide stable, sufficient, and controllable braking force, and has good hydraulic transmission and heat dissipation capabilities, to ensure the driver from braking

Basic knowledge of brake discs

2019/08/21

Why did the brake drum fail during operation?

Why did the brake drum fail during operation?

In the use of automobile brake drums, if brake drum failure occurs, it will bring danger to us. What are the reasons for brake drum failure during operation? Let's find out together! Sample analysis of failed brake drums (including one each of longitudinal cracking, creep cracking, and surface hard spot brake drums) shows that the brake drum working environment is relatively harsh. Under the action of frequent braking impact thermal stress (each braking is equivalent to an impact thermal stress), in general, the heating or cooling rate is greater than 93, or the heating is fast and uneven, and the temperature difference in the casting is greater than 102, resulting in thermal shock. Due to braking

Why did the brake drum fail during operation?

2019/08/21

Causes of brake drum cracking

Causes of brake drum cracking

Brake drums, also known as brake pots, are crucial components in a car's braking system. The quality of the brake drum directly affects braking performance and even impacts driving safety. Therefore, choosing a qualified brake drum is critical. Below, we will explore the causes of brake drum cracking.

Causes of brake drum cracking

2019/08/21

Brake hub maintenance suggestions

Brake hub maintenance suggestions

Minimize high-load driving behaviors such as sudden acceleration, sudden braking, and long continuous downhill driving, as these will accelerate the wear and aging of the brake drums.

Brake hub maintenance suggestions

2019/08/20

Welcome to Longkou Jinzheng Machinery Co., Ltd.

Welcome to Longkou Jinzheng Machinery Co., Ltd.

Longkou Jinzheng Machinery Co., Ltd. is located in Longkou, a beautiful coastal city in eastern China. Originally named Longkou Zhengzhuang Foundry, it was established in September 1993. In July 2002, it became a Sino-South Korean joint venture, "Longkou Jinzheng Machinery Co., Ltd." It is situated 10 kilometers from Longkou Port and 80 kilometers from Yantai Port. To the south lies Qingdao, and to the north, Dalian is across the sea. Convenient transportation and a superior geographical location provide the company with broad prospects for development.

Welcome to Longkou Jinzheng Machinery Co., Ltd.
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