Some possible reasons are – low liquid level, deposition of iron chips, etc. The above could lead to poor fluidity and cause an increase in contact area of cutting fluid and air which results in foaming.
Add cutting fluid on frequent basis. Please note the angle of the nozzle when applying it and avoid direct flushing at the right angles. This can reduce the chance of foaming.
Industrial lubricating grease and industrial lubricating oil are both used to provide lubrication and protection to machinery components, but they differ in terms of their form, viscosity, and application range. Choosing the appropriate lubricant depends on specific application requirements, working environments, and equipment characteristics.
The primary cause of odor is the large amount of bacteria in cutting fluid. We would suggest using clean water to blend with lubricants. This will prevent the bacteria from breeding and will increase the lubricity.
The bacteria will be inhibited when the PH value is in between 8.5 and 9.5. Thus, it is recommended to add new lubricants to maintain the right PH value. Apart from this, to extending the life of cutting fluid, we would suggest the use of centrifugal water-oil separator or chip removal machine to remove tramp oil and sludge.
Our specialists would be pleased to visit the site and evaluate for remedy if needed. If the issues remained unsolved, the cutting fluid in the sink will need to be replaced.
Possible causes for skin allergies:
- The cutting fluid contains too much bacteria
- PH value of cutting fluid is overly high
- The personnel has sensitive skin or allergies.
It is recommended to wear gloves and working suit during the operation process to avoid direct contact with cutting fluid. In addition, keep an eye on the PH value and add new lubricants as needed to prevent bacteria from breeding.
Slowly pour the oil into water and blend evenly. Do not pour oil in first and add water for blending. The ratio for blending can be adjusted depending on the conditions.
Metal cutting fluid may change color due to various reasons during its usage. Here are some common factors that can cause the color change in metal cutting fluid:
Metal Particles and Corrosion: During metal processing, metal cutting fluid may come into contact with metal particles or corrosion byproducts. These metal particles or rust can cause the fluid to change color, such as appearing gray, black, or brown.
High-Temperature Oxidation: Metal cutting fluid can undergo oxidation reactions in high-temperature environments, leading to a change in color. This oxidation can result in the fluid appearing yellow, brown, or black.
Microbial Growth: The presence of water and organic components in metal cutting fluid provides an environment for microbial growth. If microbial contamination occurs, such as bacteria, mold, or algae, they can cause the fluid to change color, appearing green, blue-green, or cloudy.
Chemical Reactions: The components in metal cutting fluid might react chemically with other substances, producing new chemical compounds that lead to a change in fluid color.
Please note that regular inspection and maintenance of metal cutting fluid are recommended to ensure its quality and performance. If the discoloration persists or worsens, further analysis and action may be required to identify the root cause and take appropriate measures.
Lubricating oils: Excellent lubricity; on the downside, poor heat dissipation may lead to heavy load, oil mist, or poor air quality in the facility.
Cutting fluid: Excellent cooling effect that smoothens workpiece processing and provides better processing environment; on the downside, lower lubricity in comparison to lubricating oils.
The NLGI (National Lubricating Grease Institute) grade is a standard used to describe the viscosity and consistency of industrial lubricating grease. This grade ranges from NLGI 000 (most fluid) to NLGI 6 (most solid). A lower number indicates a more fluid grease, while a higher number indicates a more solid grease.
The operating temperature range of industrial lubricating grease depends on its composition and additives. Generally, the operating temperature range of conventional industrial lubricating grease is around -20°C to 120°C. However, for specialized applications such as high-temperature or low-temperature use, special formulations of grease can be used, which can have a broader operating temperature range.
Such waste water contains numerous chemical substances and many potential contaminants which may harm the public health and safety, thus, the sewage is usually sent to waste-water treatment plant for treatment and purification.
To achieve green industry, we have introduced a concentrator specializing in wastewater treatment. It separates the cutting wastewater into water and concentration, which greatly reduces the treatment cost of wastewater. For more information please feel free to contact us, our specialist will gladly visit and provide further details upon your request.
- Reduced Boiling Point: Vacuum distillation effectively lowers the boiling point of liquids by reducing the system pressure. This means that liquids can evaporate and separate target components at relatively lower temperatures, thereby reducing the consumption of thermal energy.
- Minimized Thermal Decomposition: Conducted under vacuum conditions, vacuum distillation lowers the boiling point of liquids, aiding in reducing the decomposition reactions of heat-sensitive substances at high temperatures. Consequently, vacuum distillation facilitates efficient separation while maintaining the stability of target components.
- Decreased Energy Consumption: As vacuum distillation operates at lower temperatures, energy consumption is significantly reduced compared to atmospheric distillation. This is advantageous for energy conservation and minimizing operational costs.
- Emulsified oily wastewater from the machining and rolling processing industries.
- Cleaning wastewater containing pollutants from railway locomotives, vehicles, and tanker trucks.
- Mixed wastewater from petroleum refining and oil grease in the petrochemical industry.
- Electroplating wastewater.
- Wastewater from the leather production industry.
- Paint wastewater from the spray coating industry.
- Environmental Protection: Wastewater reduction lessens the burden on the natural environment. Reducing wastewater discharge means decreasing potential negative impacts on ecosystems.
- Cost Savings in Treatment: Wastewater reduction contributes to cost savings by reducing the need for outsourcing wastewater treatment.
- Regulatory Compliance: Many countries and regions have strict regulations and standards for wastewater discharge. Implementing wastewater reduction measures makes it easier for businesses to meet or exceed regulatory requirements.
- Enhanced Corporate Image: Implementing wastewater reduction measures can enhance a company's environmental and social responsibility image.
- Circular Economy: Regenerated water from distillation can be recycled and reused, promoting the circular utilization of resources.
Distillation is a physical separation process that involves heating water to convert it into vapor, then cooling and condensing the vapor to obtain pure water.
Distilled water has significantly reduced levels of dissolved solids, leading to very low conductivity. Its pH value is usually close to neutral, and it typically exhibits high transparency and clarity. This is because the distillation process is effective at removing suspended particles and impurities from the water. It's important to note that the quality of regenerated water can vary based on the type and characteristics of the wastewater, necessitating comprehensive assessment and testing to determine the most suitable measures and processes.
The main components of chain oil are base oil and additives. Depending on the specific formulation of each chain oil, the base oil typically makes up about 85% to 95% of the mixture, while additives account for around 5% to 15%.
Base oil can be divided into two main categories: mineral oil and synthetic oil. Mineral oil is a product of refining crude oil. The complexity of the refining process determines the extent to which unsaturated hydrocarbons, nitrogen, and sulfur are removed, resulting in higher stability. However, this also comes with a higher price tag. An example of mineral oil is white oil. On the other hand, synthetic oil is produced to address environments where mineral oil falls short. It boasts superior characteristics such as better antioxidant capabilities, heat resistance, radiation resistance, minimal impact on rubber seals (O-rings), and a higher viscosity index (indicating viscosity is less affected by temperature changes), leading to a longer lifespan. However, the downside of synthetic oil is its higher cost.
There are two main types of synthetic chain oil available in the market, namely ester-based oils and polyalphaolefin (PAO) oils.
Let's start with the first type, ester-based oils. The major advantage of ester-based oils is their excellent penetration capability. They can quickly penetrate into the gaps between the roller pins and plates of the chain (the areas where wear occurs due to chain movement). The primary lubrication needed is on the inside of the chain, rather than just on the surface. Surface oil serves the purpose of preventing rust. If the surface feels dry, it's an indication that more chain oil needs to be applied. Ester-based oils form strong and adhesive oil films, making them capable of withstanding heavy loads. This leads to reduced chain wear. They also have a high viscosity index (VI), around 150 (compared to mineral oil VI of approximately 90-100). Products like BECHEM CU250 belong to this category.
As for the second type, polyalphaolefin (PAO) oils are advantageous due to their cost-effectiveness compared to other types of synthetic oils. However, they are somewhat challenging to blend with additives during the manufacturing process. Therefore, producing chain oils with good anti-wear properties using PAO base oils can be difficult. Additionally, PAO oils lack the inherent metal polarity found in ester-based oils.
The selection of chain oil viscosity is currently one of the most lacking areas of knowledge in the market. However, this is actually very important. Even if the quality of the chain oil is excellent, an incorrect viscosity can still lead to a shortened chain lifespan.
Based on our experience and professional recommendations, for smaller chains, it is advisable to opt for chain oil with lower viscosity. For chains subjected to heavy loads, choosing chain oil with higher viscosity is recommended. In the case of high-speed chains, using lower viscosity oil helps reduce resistance (viscosities below 100cst are less likely to cause resistance). On rainy days, using chain oil with higher viscosity (around 250cst) provides better resistance against washout and rust prevention. If there is a concern about dust adhering to the chain, lower viscosity oil (around 46cst) can be used.