Mold Universal Fluorine Grease

In high-temperature environments, grease does not simply diminish; its "state" deteriorates due to hardening, separation, and carbonization. Even if there is some remaining, the lubrication function decreases, leading to increased sliding resistance, poor return, and fine seizure. If these warning signs are ignored, it will eventually progress to seizing or burning. Therefore, the idea that "using high-performance grease eliminates the need for reapplication" does not hold true in high-temperature areas. What is important is to visualize the signs of abnormalities and to establish rules for inspection, cleaning, and reapplication. Especially in die-casting molds, temperature changes, high surface pressure, and dust contamination overlap, causing lubrication conditions to fluctuate constantly. Maintaining a stable operational state takes precedence over reducing maintenance frequency. 【High-Temperature Sliding Component Checklist】 □ Is the return of the pin sluggish? □ Are there any signs of seizure or dust accumulation? □ Is the grease hardened or film-formed? □ Is there any catching when starting to move? □ After cleaning, is the appropriate amount reapplied? Rather than forcibly reducing maintenance frequency, the realistic approach is to operate in a way that prevents stoppage accidents before they occur.

In high-temperature environments such as die-casting molds, we sometimes receive inquiries stating that even when using high-temperature grease, the maintenance frequency does not decrease as expected. What are the reasons behind the notion that "heat-resistant grease = reduced maintenance frequency" not necessarily being true? In high-temperature environments, several complex factors come into play, including: - Evaporation and separation of oil - Oil film breakdown due to load and repeated sliding - Contamination by fine wear particles - Changes in properties due to temperature fluctuations As a result, simply having a high heat resistance does not guarantee the maintenance of a stable lubrication state. In this third installment, we will clarify: ✔ Why degradation progresses more easily in high-temperature environments ✔ The mechanisms behind seizure and sticking ✔ How to approach the decision for reapplication If you want to reassess the maintenance of high-temperature molds, please take a look. ▼ For more details, click here ▶︎ [Q&A] Why doesn't maintenance frequency decrease in high-temperature environments? [Part 3] (*https://mandm-goldengrease.com/why-grease-maintenance-frequency-high-temperature/)

Q. What happens to grease in high-temperature environments? Does it stick, deteriorate, or seize? A. In high-temperature conditions, these phenomena often occur "gradually." In a high-temperature environment, the oil components in the grease become more prone to separation and movement, making it difficult for the lubricating components to remain in the moving parts. At this stage, stiffness in movement and insufficient lubrication begin to appear. If the condition where the lubricating film cannot be maintained continues, direct contact between metals increases, leading to friction and wear. As a result, issues such as seizing and sticking occur. In other words, the progression often follows this flow: deterioration → insufficient lubrication → seizing and sticking. Even if a problem seems to occur suddenly, there is always a change in lubrication condition in the preceding stages. In high-temperature environments, not only the heat resistance temperature values but also the ability to maintain lubrication under high temperatures become crucial points for grease selection. The changes in grease that occur at high temperatures and the mechanism of trouble occurrence are organized technically in the attached document.

In die-cast molds and movable parts used in high-temperature environments, issues such as "despite applying grease, movement becomes sluggish" and "eventually seizing occurs" can be observed. This phenomenon is not merely due to wear or insufficient lubrication; the main cause is the inability to maintain a lubricating film at high temperatures. As the temperature rises, the separation and volatilization of oil components progress, making it easier for metal parts to come into direct contact with each other, leading to increased friction and rising sliding resistance. Seizing does not occur suddenly; it is a phenomenon that surfaces as a result of the gradual deterioration of lubrication conditions. In high-temperature environments, it is not only the "heat resistance temperature value" that matters, but also whether lubrication conditions can be maintained at high temperatures, which becomes an important point in grease selection. The mechanisms behind seizing and sluggish movement, as well as considerations during selection, are organized technically in the attached materials.