Metal rust has always been a lingering pain in the field of manufacturing and warehousing. Whether it is precision parts, molds, knives, or large machinery and equipment, once it is eroded by moisture, salt spray or acid and alkali environment, it may rapidly oxidize, at light it will affect the appearance, at worst, it will lead to precision failure, equipment scrapping, and bring incalculable economic losses. Among many anti-rust solutions, anti-rust oil has always occupied an irreplaceable core position due to its advantages of easy construction, uniform film formation, and reliable protection. Today, we focus on the Hank Metal Anti-rust Oil BS-400 series, from principle, performance, application to use details, to bring you a comprehensive and in-depth technical analysis to help you truly achieve "rust-proof and worry-free".
What is the Hank BS-400 series?
Hank Metal Anti-rust Oil BS-400 series is a high-performance anti-rust oil product specially designed for surface protection of ferrous and non-ferrous metals. The series adopts imported refined base oil and composite anti-rust additive system to form a dense molecular adsorption film through scientific ratio, which can effectively isolate the direct contact of moisture, oxygen and corrosive media with metal surfaces, so as to achieve long-term stable anti-rust protection.
Unlike ordinary anti-rust oils, the BS-400 series fully considered the complex working conditions of the industrial site in the early stage of research and development, taking into account the four core indicators of "rust resistance", "oil film thickness", "easy cleaning" and "workpiece subsequent processing compatibility". It can be used for short-term rust prevention between processes, as well as long-term storage and rust prevention of finished products. Some models also have certain lubricity and permeability, truly realizing multiple uses of one oil.
Second, the principle of rust prevention: more than just a layer of oil
The anti-rust mechanism of the BS-400 series can be summarized as three layers of protective barriers:
The first layer: displacement and dehydration. The metal surface often remains a water film or a small amount of moisture after cleaning or processing. The BS-400 series contains special polar groups that can preferentially adsorb on the metal surface to replace water molecules and establish a strong chemical adsorption layer between the metal and the oil film, eliminating the basic conditions of electrochemical corrosion from the source.
The second layer: tight oil film shielding. Additive molecules are oriented on the metal surface to form a nano-scale tight oil film. This oil film has excellent continuity and self-repair. Even if there is a slight external force damage, the free rust inhibitor molecules can quickly migrate to the damaged area for repair, ensuring the integrity and long-term effect of the shielding layer.
The third layer: neutralization and passivation. The basic corrosion inhibitor in the BS-400 series can neutralize acidic gases (such as SO2, CO 2, etc.) that settle in the environment and produce a passivation effect on the metal surface, significantly reducing the activity of corrosive micro-batteries. It is especially suitable for use in environments with heavy industrial air pollution.
III. The core performance advantages of the BS-400 series
1. Long anti-rust cycle
Verified by standard salt spray test and damp heat test, the BS-400 series can be rust-proof for 12 to 36 months under indoor storage conditions, and some models can even be rust-proof for more than 5 years after thorough cleaning and dry packaging. This provides a reliable guarantee for metal products exported by sea or long-term storage.
2. Excellent water replacement and fingerprint neutralization performance
The BS-400 series has excellent water replacement ability, which can quickly penetrate into complex parts such as deep holes, blind holes, and hinges of the workpiece to completely discharge the residual moisture. At the same time, it also has a certain fingerprint neutralization effect. Even if the operator touches the workpiece with bare hands and leaves a handprint, it can decompose the salt and organic acid in the sweat through the neutralizing agent in the anti-rust oil to prevent fingerprint corrosion.
3. The oil film is thin and transparent, and the workpiece can be packaged without secondary processing
Ordinary anti-rust oils often have a thick oil film, which adheres to dust and affects the appearance. BS-400 series selects low-viscosity base oils, with uniform and controllable oil film thickness. After drying, the surface is smooth and transparent, non-sticky, and does not drip. The workpiece can be directly labeled, packed, and even directly carried out subsequent assembly processes without additional cleaning, which greatly improves production efficiency.
4. Environmental protection and safety
All components comply with RoHS and REACH environmental protection regulations, do not contain heavy metals such as barium, lead, cadmium, and do not contain harmful aromatic hydrocarbon solvents. The product has passed SGS testing, with a high flash point and safer use process. At the same time, BS-400 series has good biodegradability and low waste oil treatment cost, which is in line with the development trend of modern green manufacturing.
5. Compatible with a variety of metal materials
Whether it is carbon steel, cast iron, alloy steel, or galvanized sheet, aluminum, copper and its alloys, the BS-400 series can provide effective anti-rust protection. It is especially suitable for the overall anti-rust of mixed metal components, avoiding the risk of galvanic corrosion between different metals.
IV. Main models and application scenarios of the BS-400 series
The Hank BS-400 series is not a single product, but is subdivided into multiple specifications based on rust protection time, oil film status, and use environment to help users accurately match their needs.
BS-401 standard anti-rust type: suitable for anti-rust and short-term storage between processes of machined parts, molds, measuring tools and cutting tools. Usually the effective indoor anti-rust period is 6 to 12 months. Its low viscosity formula has good permeability and is suitable for dipping treatment of complex shaped workpieces.
BS-402 long-term storage type: suitable for finished products, spare parts, bearings, hydraulic components and other metal products that need long-term storage. The effective anti-rust period is 12 to 36 months, the oil film thickness is moderate, the protection is strong, and it is easy to clean and remove with petroleum solvents.
BS-403 ultra-thin soft film type: The most outstanding feature is that the oil film is extremely thin and moist and supple. It adopts a special solvent carrier to form a nearly transparent soft film after evaporation. It can provide anti-rust protection for about 6 months, and at the same time has excellent lubrication performance. It is suitable for precision fittings and occasions that require direct lubrication.
BS-405 water-based replacement type: Especially designed for workpieces after electroplating, phosphating and blackening, it can be instantly replaced with residual moisture to quickly form a stable oil film. It is suitable for drying and pre-treatment after final cleaning, and can effectively inhibit the generation of white rust and yellow rust.
V. Correct use of methods and techniques
In order to give the BS-400 series the best anti-rust effect, the details during use are crucial.
1. Surface pretreatment
Anti-rust oil cannot replace cleaning. Before applying oil, the surface of the workpiece should be removed from oil, chips, welding slag, old rust and salt residues. It is recommended to use water-based cleaning agent or hydrocarbon cleaning agent for ultrasonic cleaning, and then fully dry. If there is floating rust on the surface, it is recommended to use a rust remover first, otherwise it will significantly affect the adhesion of the oil film and the anti-rust cycle.
2. Construction method
Impregnation method: suitable for large quantities of small parts, use a net basket to immerse in anti-rust oil to ensure complete immersion and lift up and down several times to remove air. The oil temperature is recommended to be controlled at 40 to 60 degrees Celsius to reduce viscosity and improve permeability.
Spraying method: suitable for large workpieces or components that are not easy to impregnate. Use a watering can or an automatic spraying line, pay attention to keep the distance evenly sprayed to avoid local oil accumulation. Key parts such as blind holes and grooves should be sprayed with emphasis.
Brush coating method: suitable for local rust prevention or field operations. Use a soft brush to brush evenly, taking care not to miss the corners and welds.
3. Packaging and storage
After the workpiece is oiled, it should be packed after the oil film is naturally leveled and the solvent is fully volatilized. It is recommended to use anti-rust paper, gas phase anti-rust bag or PE film for sealed packaging to isolate the external environment. The storage environment should be kept dry and ventilated to avoid direct sunlight and rain. The relative humidity of the warehouse is controlled below 70%, and the temperature change should not be severe to prevent condensation.
4. Lifecycle monitoring
Even if high-quality anti-rust oil is used, it should be sampled regularly for anti-rust effect. For products that have been stored for a long time, it is recommended to conduct an appearance inspection every 3 months. If the oil film is found to be white, foaming or slightly rusted, remedial measures should be taken in time, such as recoating or re-cleaning and changing the oil.
VI. Answers to Common Questions and Misunderstandings
Q: Can the workpiece be directly welded or painted after being coated with BS-400?
Answer: Not recommended. Anti-rust oil residue will affect the welding quality and coating adhesion. If the welding part, the oil film should be completely removed with a degreaser before welding. If the workpiece is painted, a washable anti-rust oil should be selected and degreased before painting.
Q: Which BS-400 series is better than gas phase anti-rust materials?
Answer: Both have their advantages. Vapor phase anti-rust materials are suitable for the overall protection of irregular workpieces in confined spaces, but are more affected by packaging damage. Anti-rust oils are more reliable and long-lasting, and are suitable for metal parts with high surface quality requirements and long-term fixation. In practical applications, the two can be used in combination to achieve double protection.
Q: Why does the workpiece appear white on the surface after being oiled for a period of time?
Answer: This situation is mostly a "whitening" phenomenon, which may be due to the high humidity of the environment, the moisture absorption and precipitation of additives in the anti-rust oil, or the reaction between the alkaline cleaning agent and the anti-rust agent left on the surface of the workpiece. The solution is to strictly control the drying after cleaning, choose the appropriate model, and keep the storage environment ventilated and dry.
Q: Can the BS-400 series be used for copper and aluminum?
Answer: Yes. The BS-400 series formula does not contain corrosive elements such as active sulfur and chlorine, and is neutral to copper, aluminum and its alloys. However, it should be noted that anti-rust oil cannot completely isolate the oxidation and discoloration of copper in humid environments. If copper parts are required to remain bright, it is recommended to use special copper corrosion inhibitors or sealants.
VII. The value and market recognition of the Hank BS-400 series
In the market of anti-rust oil with serious product homogeneity, why does the Hank BS-400 series win users' favor? The answer lies in its pursuit of "stability" and "efficiency".
From the raw material side, the BS-400 series uses the composite agent of international high-quality additive suppliers, and the formula has undergone up to two years of reliability testing to ensure the consistent performance of each batch of products. From the production process, the Hank factory introduces a strict online quality control system, and the viscosity, acid value, flash point, and anti-rust performance of each batch must be verified by standard salt spray tests before leaving the factory.
In actual customer feedback, after an auto parts manufacturer used BS-402 instead of the original anti-rust oil, the rust rate of the workpiece decreased from 3.2% to less than 0.1%, and the storage period was extended from 6 months to 24 months. At the same time, due to the easy cleaning of the oil film, the assembly line did not need to add additional cleaning processes, and the comprehensive cost decreased by about 18%. Another precision mold company used BS-403 ultra-thin soft film type, which not only satisfied the anti-rust effect, but also found that its excellent permeability significantly improved the initial lubrication effect of the mold sliding parts, killing two birds with one stone.
Industry trends and the future of the BS-400 series
With the deepening of intelligent manufacturing and green environmental protection concepts, anti-rust technology is evolving in the direction of low VOC, high performance and intelligence. Hank BS-400 series has been laid out in advance to greatly reduce volatile organic compound emissions while maintaining efficient anti-rust, and explore the development of degradable anti-rust agents.
In the future, Hanke will also launch an intelligent anti-rust monitoring system based on the Internet of Things. By integrating miniature sensors in the package, real-time temperature, humidity and corrosion rate data will be collected, and early warning information will be pushed to users through the mobile APP. This concept is highly consistent with the precision protection concept of the BS-400 series, which will promote industrial anti-rust from "reactive response" to "active prevention".
Nine, practical tips
1. During summer construction, avoid high temperatures at noon, and try to choose morning and evening or an air-conditioned workshop to prevent the solvent from evaporating rapidly and causing uneven oil film.
2. When stored in an extremely cold environment, the anti-rust oil may thicken and can be heated to a flowing state before use without affecting its performance.
3. After opening the barrel, the unused anti-rust oil should be immediately capped and sealed to prevent solvent volatilization and moisture from mixing.
4. For overseas export products with extremely high anti-rust requirements, it is recommended to conduct a neutral salt spray test sampling inspection before packing to ensure the suitability of the actual transportation environment.
5. Do not mix different brands of anti-rust oils to avoid conflicts in the additive system and reduce the anti-rust ability.
X. conclusion
"Anti-rust and worry-free" is not just a slogan, but also a solemn commitment to every user of Hank Metal Anti-rust Oil BS-400 series. From the process protection of precision and tiny shafts to the long-term storage of mining machinery weighing several tons, the BS-400 series silently guards every detail of metal workpieces with deep technical precipitation and rigorous quality control system. Choosing the BS-400 series is to choose reliability and peace of mind. On the road of metal protection without end, Hank will always walk with you, so that rust will no longer become a pain point in production, and high-quality metal products can go to the world in the most perfect state.
No matter whether you are engaged in machining, automotive parts, hardware tools, powder metallurgy, or metal surface treatment industries, Hank Metal Anti-Rust Oil BS-400 series can tailor the ideal anti-rust solution for you. Stop letting rust destroy the fruits of your labor, contact professional technicians today for free sample trials and technical support!
