Frequently Asked Questions_QINGJIE——Focused on producing various lubricants

qingjieshihua@163.com

News

Frequently Asked Questions

As the temperature drops, how should you choose lubricants?

As the temperature drops, how should you choose lubricants?

As the Frost Descent solar term arrives, the temperature difference between day and night increases, and your car’s engine requires extra attention. The engine is the heart of the vehicle, and inside it, numerous metal surfaces are in constant frictional motion. These components move at high speeds in a harsh environment, with operating temperatures ranging from 400°C to 600°C.

24

2023

/

10

What are some common misconceptions about lubricant usage?

What are some common misconceptions about lubricant usage?

The oil level should ideally be maintained between the upper and lower markings on the dipstick. If there’s too much oil, it can leak into the combustion chamber through the clearance between the cylinder and the piston, where it will burn and form carbon deposits. These carbon deposits will accelerate wear on the cylinder and piston and speed up oil contamination.

10

2023

/

03

What are the possible reasons for the oil warning light to come on?

What are the possible reasons for the oil warning light to come on?

The oil warning light typically comes on due to insufficient oil pressure in the lubrication system. Common causes include the following: ⑴ The oil level in the oil pan is too low; check whether there are any leaks caused by poor sealing. ⑵ The engine oil has been diluted by fuel, or the engine is operating under excessive load at excessively high temperatures, causing the oil’s viscosity to decrease.

10

2023

/

03

If the lubricating oil turns black, do you need to replace it immediately?

If the lubricating oil turns black, do you need to replace it immediately?

After being used for a period of time, lubricating oil tends to turn black. Some car owners mistakenly believe that this indicates the oil has severely deteriorated and thus replace it prematurely, leading to unnecessary waste. Typically, motor oils are formulated with detergents and dispersants designed to wash away the sticky film and black carbon deposits that accumulate on pistons. As a result, the color of the lubricating oil often darkens after some use—but this does not mean the oil has gone bad. So why does the color of lubricating oil turn black? Today, our editor will explain it to you.

14

2022

/

03

Hydraulic Oil Contamination Control for Construction Machinery

Hydraulic Oil Contamination Control for Construction Machinery

Hydraulic oil serves as the working medium in hydraulic transmission systems, playing a crucial role in energy transfer, conversion, and control. At the same time, it provides lubrication, corrosion prevention, rust inhibition, and cooling for various components within the hydraulic system. Controlling contamination in construction machinery hydraulic systems ensures their normal operation, thereby extending the machinery's service life and enhancing its value. To effectively control hydraulic oil contamination, it is essential to select the right hydraulic oil: a. Choose high-grade anti-wear hydraulic oils; whenever possible, opt for hydraulic oils that match the original manufacturer’s specified brand and grade. Currently, there are numerous manufacturers and suppliers of hydraulic oils both domestically and internationally, and hydraulic oils vary significantly in quality—some are superior, while others are inferior or even counterfeit and substandard.

24

2022

/

01

How do you determine whether a bearing can be reused? Pay attention to the bearing grease seal.

How do you determine whether a bearing can be reused? Pay attention to the bearing grease seal.

When performing regular maintenance, operational inspections, and replacement of peripheral components on equipment, the bearings that have been removed should be inspected to determine whether they can be reused or whether their current condition is better or worse than before. It is essential to carefully examine and document the condition of the removed bearings, including their external appearance. To accurately determine and investigate the remaining amount of lubricant, after taking samples, the bearings must be thoroughly cleaned. Next, inspect the raceway surfaces, rolling element surfaces, mating surfaces, and the condition of the retainer for any signs of damage or abnormalities. To decide whether a bearing can be reused, the China Lubricant Network recommends considering factors such as the extent of bearing damage, machine performance, the importance of the component, operating conditions, and inspection results.

24

2022

/

01

A Brief Discussion on the Uncertainty of Base Oils

A Brief Discussion on the Uncertainty of Base Oils

As the variety and availability of base oils on the market continue to expand, lubricant suppliers are also making ongoing efforts to better understand the differences among various types of base oils, thereby gaining a clearer grasp of the relative performance advantages each type offers. Giovanni Loizzo, Head of Base Oil Procurement at Lubrizol, highlighted several base-oil-related questions frequently raised by lubricant formulation developers when designing engine oils. Base oils are the primary components of lubricants, accounting for anywhere from 75% to 90% of the formulation in passenger car or heavy-duty vehicle engine oils. The properties of different base oils vary significantly from one another, which can have a substantial impact on the overall performance of the lubricant.

24

2022

/

01

Trends in Heavy-Duty Engine Oil Development

Trends in Heavy-Duty Engine Oil Development

Currently, heavy-duty on-road and off-road applications may continue to use the same engine oil specifications. However, at some point, it might become necessary to consider a dedicated off-road performance specification or develop unique products better suited to this market. This, in itself, presents certain challenges. Sometimes, the development of heavy-duty engines seems like that of a slow but steady turtle, whereas the development of passenger-car engines resembles that of a swiftly darting hare. Nevertheless, heavy-duty engine oils are steadily moving in the same direction as light-duty oils, with sulfur ash content emerging as a newer focus—particularly in off-road applications. Fuel economy is driving demand among Chevron’s heavy-duty original equipment manufacturers.

24

2022

/

01

Here are two quick tips to help you identify genuine imported motor oil.

Here are two quick tips to help you identify genuine imported motor oil.

Attention, car owners: Currently, there are over 4,000 different brands of motor oil on the market, with widely varying quality. Although genuine imported motor oils are of high quality, it’s often difficult for ordinary consumers to tell them apart. We’ll show you a simple little experiment—just two easy steps—to help you easily identify genuine imported motor oils. First: Look! On the front and back of the original imported oil drum, the large label is entirely in English, with absolutely no Chinese characters. You can also check the barcode and the double-circle seal. (We’ll go into detail below.) Second: Burn! The term “genuine imported” means that the oil was filled into the drums overseas before being imported—both the oil itself and the oil drums are imported! Whether or not something is genuinely imported can sometimes fool people, though.

24

2022

/

01

The “production + service” model is becoming the direction for lubricant companies.

The “production + service” model is becoming the direction for lubricant companies.

In the post-pandemic era, as demand for lubricants declines, the “production + service” supply-chain model should become the development direction for domestic lubricant manufacturers and distributors. This was the key message conveyed at the second session of the second general meeting of the Shandong Province Lubricant Industry Association, held in Jinan on June 27. At the meeting, experts pointed out that due to the impact of the COVID-19 pandemic, both domestic and international demand for lubricants has declined. Specifically, domestic demand for lubricants is expected to drop by 7% to 10% year-on-year. However, China’s current oil-grade structure lags behind the evolving environmental standards for vehicles; thus, there remains considerable room for improvement in China’s oil-grade levels in the future, which could lead to an increase in demand for lubricants. Zhang Chenhui, deputy director of the Specialized Committee of the National Lubricant Enterprises Alliance, noted that, amid the decline in lubricant demand caused by the pandemic, lubricant companies need to innovate their production and sales models—shifting from a focus on quantity growth to one emphasizing quality enhancement and efficiency improvement. They should develop high-quality, specialized, and niche products, moving away from a single-product structure toward product diversification. At the same time, lubricant companies should also enhance the service levels provided by their sales networks. According to Da Jianwen, head of the expert panel of the Specialized Committee on Research and Application of Special Oil (Wax) Production Technologies, the impact of the pandemic will see domestic sales replacing imports, making it more important than ever to expand domestic sales channels. Nevertheless, in areas such as specialty oils—for example, oils used in vaccines and nuclear power—China still largely relies on imports. Therefore, domestic lubricant companies must persist in pursuing a path of differentiation, specialization, and high-end development, continuously enhancing the added value of their products to meet the new demands of the post-pandemic era.

08

2022

/

01

< 1 2 3 >

Yachen

Can't find the service you're looking for? Please contact us!

To inquire about our products, please leave us your email, and we’ll get back to you within 24 hours.

Phone:

Email:

qingjieshihua@163.com

Business Address:

Room 1905, Quanshun 186 Office Building, Zhanlan Road, Luolong District, Luoyang City

Email：qingjieshihua@163.com

tel：400-999-6882