美孚Pyrogard D
高性能水基液壓液
產(chǎn)品描述
美孚Pyrogard D是一種高性能水基液壓液的設(shè)計滿足了經(jīng)濟型抗燃液壓油在一般工業(yè)應(yīng)用的要求。它由一個油相圍繞細(xì)分散的水滴均勻地分散在整個混合物。這保證了只有油相，不是水，接觸和潤滑運動部件，從而最大限度地減少磨損。這種倒置的乳液有一個更高的粘度比傳統(tǒng)的油在水乳劑。所使用的添加劑系統(tǒng)提供了一個高水平的磨損保護和耐腐蝕和形成的牙齦和樹脂。
美孚Pyrogard D來自其水含量的耐火性能。即使當(dāng)液噴在壓力超過200 bar / 3000磅的柴油機噴油器為丙烷火焰，它不會點燃。該乳劑是非常穩(wěn)定的，在正常存儲過程中，將表現(xiàn)出很少的水分離，只有少量的油分離。溫和的攪拌或正常的服務(wù)通常會返回任何分離的油的乳液。該乳液具有白色的外觀，它突出了點的泄漏，使他們能夠及時修復(fù)，以盡量減少流體損失。
它的多功能性和出色的業(yè)績記錄，使美孚Pyrogard D用戶之間選擇的流體。
特點和優(yōu)點
美孚Pyrogard D是一個品牌的抗燃液壓油提供了出色的服務(wù)，在世界范圍內(nèi)的重要成員，在最苛刻的應(yīng)用。美孚Pyrogard D是液壓設(shè)備制造商共同開發(fā)出滿足其抗火性能和潤滑性能的關(guān)鍵要求的應(yīng)用需求。Pyrogard D提供了以下好處：
功能優(yōu)勢和潛在的好處
優(yōu)良的防火性能提高了人員和設(shè)備的安全性
抗磨特性與良好的礦物抗磨液壓油的最低泵和閥的磨損，減少了停機時間
良好的保護，防止生銹，腐蝕和氧化的自由從泵部件和屏幕上的存款減少維護
適用范圍廣泛的泵設(shè)計，包括鋼，鋁和銅合金結(jié)構(gòu)的優(yōu)良的多金屬相容性
通常用于液壓系統(tǒng)最小化轉(zhuǎn)換成本從礦產(chǎn)品密封材料兼容
抗細(xì)菌和真菌的活動不需要特殊的殺蟲劑或殺菌劑，除了引入一個非常骯臟的系統(tǒng)
乳液外觀白色，突出了快速修復(fù)和最小流體損耗的泄漏點
應(yīng)用
當(dāng)灌裝美孚Pyrogard D成一個系統(tǒng)，以前使用的石油液體或水/乙二醇型流體，它的系統(tǒng)徹底清理之前推出新產(chǎn)品的關(guān)鍵。而美孚Pyrogard D與氟橡膠和丁腈橡膠的相容性（腈），它不應(yīng)該被用于丁基橡膠、皮革、天然橡膠、軟木復(fù)合材料或纖維增強填料。
在4 C和55 Coo之間的溫度下操作，確保良好的性能。因為從產(chǎn)品的水分蒸發(fā)的可能性，不建議散裝液體溫度超過65oC。水的含量是重要的，必須保持在最低限度的38%，以保持最佳的抗火性能。當(dāng)水蒸發(fā)時，流體的粘度降低。增加水含量的增稠乳液的粘度增加的。這種特殊的水在油乳液的特性，使它更重要的是保持適當(dāng)?shù)乃浚源_保正確的粘度和耐磨保護，以及耐火性。在正常工作條件下，水的蒸發(fā)非常緩慢，水的補充，以恢復(fù)抗火，只需要在延長的時間間隔。
美孚Pyrogard D是推薦使用的液壓系統(tǒng)，使用合適的齒輪，葉片或活塞泵的使用與接近火源。應(yīng)遵守設(shè)備制造商的指示。它特別適用于鋼鐵米爾斯，礦山和壓鑄等工業(yè)應(yīng)用。具體應(yīng)用包括：
液壓剪板機、自動焊機、核心機、印刷機、切邊機、注塑機
連續(xù)的礦工，輸送機和巖石破碎機
壓鑄機、提升機
Mobil Pyrogard D
High Performance Water-based Hydraulic Fluid
Product Description
Mobil Pyrogard D is a high performance water-based hydraulic fluid designed to meet the requirement for economical fire-resistant hydraulic fluids in general industrial applications. It consists of an oil phase surrounding finely divided water droplets uniformly dispersed throughout the mixture. This ensures that only the oil phase, not the water, contacts and lubricates moving parts, thereby minimizing wear. Such inverted emulsions have a higher viscosity than conventional oil-in-water emulsions. The additive system used provides a high level of wear protection and resistance to corrosion and the formation of gums and resins.
The fire resistant properties of Mobil Pyrogard D derive from its water content. Even when the fluid is sprayed at a pressure of over 200 bar / 3000 psi from a diesel engine fuel injector into a propane flame, it will not ignite. The emulsions are extremely stable and, during normal storage, will exhibit very little water separation and only a minor amount of oil separation. Mild agitation or normal service usually will return any separated oil to the emulsion. The emulsion has a white appearance, which highlights points of leakage so that they can be repaired promptly to minimize fluid loss.
Its versatility and excellent performance record make Mobil Pyrogard D a fluid of choice among users.
Features and Benefits
Mobil Pyrogard D is an important member of a brand of fire-resistant hydraulic fluids that have provided outstanding service, worldwide, in the most demanding of applications. Mobil Pyrogard D was developed in conjunction with hydraulic equipment builders to meet the needs of applications in which fire-resistance properties and lubrication performance are key requirements. Pyrogard D offers the following benefits:
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Features
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Advantages and Potential Benefits
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Excellent Fire resistance
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Increased safety for personnel and plant
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Antiwear characteristics comparable with good mineral antiwear oils
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Minimum pump and valve wear, less downtime
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Good protection against rust, corrosion and oxidation
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Freedom from deposits on pump parts and screens; reduced maintenance
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Excellent multi metal compatibility
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For use with a wide range of pump designs including steel, aluminum and copper alloy construction
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Compatible with seal materials normally used in hydraulic systems
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Minimized change-over costs from mineral products
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Resistant to bacterial and fungal activity
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Do not require special biocides or fungicides, except when introduced into an unusually dirty system
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Emulsion has white appearance
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Highlights points of leakage for rapid repair and minimal fluid wastage
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Applications
When filling Mobil Pyrogard D into a system that has previously used petroleum fluid or water/glycol type fluid, it is essential to clean the system thoroughly before introducing the new product. While Mobil Pyrogard D is compatible with both Viton and Buna N (nitrile) rubbers, it should not be used with butyl rubber, leather, natural rubber, cork composition materials or fabric-reinforced packing.
Operation at temperatures between 4oC and 55oC will ensure good performance. Because of the possibility of water evaporation from the products, bulk fluid temperatures above 65oC are not recommended. The water content is important and must be maintained at a minimum of 38% to retain optimum fire resistance properties. As water evaporates, the viscosity of the fluid decreases. Increasing the water content thickens the emulsion and increases its viscosity. This peculiar characteristic of water-in-oil emulsions makes it doubly important to maintain the proper water content to ensure the correct viscosity and wear protection as well as fire resistance. Under normal operating conditions, water evaporation is very slow and water addition to restore fire resistance will only be necessary at extended intervals.
Mobil Pyrogard D is recommended for use in hydraulic systems using suitable gear, vane or piston pumps in applications with close proximity to sources of ignition. Equipment manufacturers' instructions should be observed. It finds particular application in steel mills, mines and die-casting and other industrial applications. Specific applications include:
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Hydraulic shears, automatic welders, core machines, presses, trim presses and injection molding machines
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Continuous miners, conveyors and rock breakers
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Die-casting machines, hoists
Typical Properties
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Mobil Pyrogard D
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Viscosity, ASTM D 445, cSt @ 40oC
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119
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Pour Point, oC, ASTM D 97
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-30
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API Gravity, ASTM D 287
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21.5
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Water plus Glycol content, ASTM D 95, wt-%
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44
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Color, visual
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White
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Emulsion Stability, ASTM D 3707, 16 hrs @ 93oC, Water/Oil Separation, vol%
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1/4
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