1.透氣鋼熱處理
PORCERAX II透氣鋼的出廠硬度為35-40 HRC,但是如果有特殊需求,本產(chǎn)品也可以處理至HRC50~52度使用,PORCERAXⅡ透氣鋼的熱處理應在真空爐中進行。
2.透氣鋼硬度
PORCERAX II透氣鋼的表面25%是孔隙,如果用洛氏或布氏硬度計測試硬度,會給出虛假或誤導的讀數(shù)。采用任何一種施加符合的測試的硬度計,都會使得表面之下的氣孔倒塌并呈現(xiàn)一個假閱讀。建議使用顯微維氏硬度計(50或30克負載)來測量新東透氣鋼之硬度。
3.新東透氣鋼蝕紋
PORCERAX II透氣鋼(7微米級)可以進行蝕刻,但是為了防止破壞的材料的內(nèi)部的排氣結構的,某些程序必須嚴格遵守。
至關重要的是,應確保加工部門了解透氣鋼材質(zhì)以及蝕刻技術,否則可能使得工件徹底報廢。透氣鋼在蝕刻之前,必須徹底清洗空隙并妥善密封,否則蝕紋過程中所使用的腐蝕劑會浸入孔隙結果,生銹并堵塞氣孔,這種損害是不可逆的,必須更換新的透氣鋼工件。
我們建議不要在蝕紋面中插入透氣鋼,透氣鋼完美的排氣性,會導致插入?yún)^(qū)域紋理分辨率變高而光澤降低,同時由于透氣鋼所需要的預處理過程,使得交期延長、成本提高,合理的安裝區(qū)域會是更好的選擇。更多的信息,可咨詢你的透氣鋼供貨商。
4.新東透氣鋼表面呈現(xiàn)
在正確的使用情況下,PORCERAX II透氣鋼實現(xiàn)了完美的排氣,使得樹脂和模具成型表面的完美貼合,從而可以產(chǎn)生高質(zhì)感、啞光的表面。但是如果將透氣鋼安裝在腔側(cè),起結果將造成紋理設計和實際光澤的差異,不過如果產(chǎn)品成型后會被再次噴涂,則可能是可以接受的。
5.水冷管線
出于尺寸或應用的考慮,偶爾會采取水冷卻透氣鋼工件的方法。有多種方式來實現(xiàn)這一點。在涉及一個直通水管線方案時,密封防泄漏的鍍鎳水管是有效的。在復雜管路模式中,最好使用可以接受的密封劑,如dichtol。化學鍍鎳有一點要注意,應當遠離尖角,例如那些穿插在水管的交叉點,否則鍍鎳層會有脫落的可能,最終導致泄露。另外,dichtol密封膠使用不當也會產(chǎn)生相同的結果。請確保透氣鋼材料已被徹底清除殘留的加工液或其他污染物。
水冷管線安裝和密封步驟:http://www.thdbkbl.com/gelizi/zl160.html
Porcerax II
Post-Machining Treatments
Heat Treatment
Heat treating of Porcerax II should be done in a vacuum furnace. As supplied, Porcerax II has a hardness of 35-40 HRC. It can be heat treated to 50-52 HRC; however, Porcerax II carries a fairly high potential for movement. Strict guidelines are supplied by International Mold Steel and should be followed.
Hardness
Porcerax II is 25% porosity by volume and will give false or misleading readings if tested with either a Rockwell or Brinell hardness tester. As the load of either of these testers is applied, the pores beneath the surface will collapse and render a false reading. It is recommended that a micro Vickers hardness tester (50 or 30g load) be used to test the hardness of Porcerax II.
Texturing
Porcerax II (7 micron grade) can be textured. In order to prevent the possibility of destroying the internal vent structure of the material, certain procedures must be strictly adhered to. It is imperative that the chosen texture source know they are working with Porcerax II. If they don't, the likelihood for permanent, irreparable damage to the piece is virtually assured.
The pores of the material must be thoroughly cleaned and properly sealed prior to texturing. Failure to do so results in the etchants used in the texturing process leaching into the pore structure and rusting the venting closed. This rust is permanent and cannot be removed once it has occurred. The piece will be useless and must be replaced.
Thousands of molds worldwide have been successfully textured. However, it is imperative that the molder and/or moldmaker's texture source be supplied with the information needed from International Mold Steel to properly process the piece.
We strongly advise against inserting Porcerax II into an already textured surface. The perfect venting of Porcerax II results in much higher resolution of the grain at the inserted area and a dramatic reduction in gloss. It is recommended that the entire textured surface be Porcerax II. Also, due to the pre-treatment procedure required for texturing Porcerax II, expect longer deliveries and higher costs. Please consult your graining source for more information.
Surface Reproduction
Porcerax II provides perfect venting of all gases from the mold. While this is desirable in most cases, the venting of the Porcerax produces a perfect "marriage" between the resin and the molding surface, thus producing a dull, matte finish. If Porcerax II is used as an insert on the cavity side, the result will be two dissimilar appearances due to differences in gloss and texture definition. This may be acceptable if the parts are painted after molding.
Water Lines
Occasionally the need will arise, due to size or application considerations, to water-cool Porcerax II. There are a number of ways to accomplish this. In designs that involve a straight-through water line pattern, a simple, effective way to seal the line and prevent leakage is electroless-nickel plate the water lines. In complex circuit-type patterns, it is advisable to use an acceptable sealant such as Dichtol. Electroless nickel has a tendency to pull away from sharp corners such as those at intersections of crossing water lines. However minutely this pulling away from corners may be, it will eventually cause some leakage into the material and reduce permeability through oxidation. Improper use of the Dichtol sealant will produce the same results. Regardless of which sealing process is used, be absolutely certain the material has been thoroughly cleaned of any residual machining fluids or other contaminants.
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