鋁板固溶處理保溫時(shí)間的選擇原則是在正常固溶熱處理溫度下，使強(qiáng)化相達(dá)到滿意的溶解程度，并使固溶體充分均勻及晶粒細(xì)小。鋁板淬火保溫時(shí)間主要是根據(jù)淬火加熱溫度、合金的本性、制品的種類、固溶前組織狀態(tài)(強(qiáng)化相分布特點(diǎn)和尺寸大小)、產(chǎn)品的形狀  (包括斷面厚度的尺寸大小)、加熱方式(鹽浴爐及空氣循環(huán)爐，連續(xù)還是非連續(xù)加熱)、加熱介質(zhì)、冷卻方式和裝爐量的多少，以及組織性能的要求等因素來(lái)確定。對(duì)于同一牌號(hào)的鋁板合金，確定保溫時(shí)間應(yīng)考慮以下幾個(gè)因素：
The selection principle of holding time for solution treatment of aluminum plate is to make the strengthening phase dissolve satisfactorily at normal solution heat treatment temperature, and make the solid solution fully uniform and grain fine. The holding time of aluminum plate quenching is mainly based on the quenching heating temperature, the nature of alloy, the type of products, the microstructure before solution (the distribution characteristics and size of strengthening phase) and the shape of products (including the size of cross-section thickness), heating mode (salt bath furnace and air circulation furnace, continuous or discontinuous heating), heating medium, cooling mode and charging quantity, as well as the requirements of microstructure and properties. For the same brand of aluminum alloy, the following factors should be considered in determining the holding time:
(1)產(chǎn)品的形狀。淬火加熱時(shí)的保溫時(shí)間與制品的形狀(包括斷面厚度的尺寸大小)有密切的關(guān)系，斷面厚度越大，保溫時(shí)間就相應(yīng)越長(zhǎng)。截面大的半成品及形變量小的工件，強(qiáng)化相較粗大，保溫時(shí)間應(yīng)適當(dāng)延長(zhǎng)，使強(qiáng)化相充分溶解。大型鍛件和模鍛件的保溫時(shí)間比薄件的長(zhǎng)好幾倍；
(1) The shape of the product. The holding time during quenching is closely related to the shape of the product (including the size of the section thickness). The larger the section thickness is, the longer the holding time is. For semi-finished products with large cross-section and workpieces with small deformation, the strengthening phase is coarse, and the holding time should be appropriately extended to make the strengthening phase fully dissolve. The holding time of heavy forgings and die forgings is several times longer than that of thin ones;

(2)鋁板加熱溫度。淬火加熱時(shí)的保溫時(shí)間與加熱溫度是緊密相關(guān)的，加熱溫度越高，強(qiáng)化相溶入固溶體的速度越大，其保溫時(shí)間就要；
(2) Heating temperature of aluminum plate. The higher the heating temperature is, the faster the strengthening phase dissolves into the solid solution, and the longer the holding time is;
(3)塑性變形程度及6061鋁板制品種類。熱處理前的壓力加工可加速?gòu)?qiáng)短些化相的溶解。變形程度越大，強(qiáng)化相尺寸越小，保溫時(shí)間可短些。經(jīng)  冷變形的工件在加熱過(guò)程中要發(fā)生再結(jié)晶，應(yīng)注意防止再結(jié)晶晶粒過(guò)  分粗大。固溶處理前不應(yīng)進(jìn)行臨界變形程度的加工。
(3) Plastic deformation degree and 6061 aluminum products. The pressure processing before heat treatment can accelerate the dissolution of short and strong phases. The larger the deformation, the smaller the size of strengthening phase and the shorter the holding time. The recrystallization of cold deformed workpieces during heating should be avoided. The critical deformation should not be processed before solution treatment.
擠壓制品的保溫  時(shí)間應(yīng)當(dāng)縮短，以保持?jǐn)D壓效應(yīng)。對(duì)于采用擠壓變形程度很大的擠壓材做毛料的模鍛件，如果淬火加熱的保溫時(shí)間過(guò)長(zhǎng)，將由于再結(jié)晶過(guò)程的發(fā)生，而導(dǎo)致局部或全部擠壓效應(yīng)的消失，使制品的縱向強(qiáng)度降  低。擠壓時(shí)的變形程度越大，需要保溫的時(shí)間就越短。
The holding time of extruded products should be shortened to maintain the extrusion effect. If the holding time of quenching heating is too long, the partial or total extrusion effect will disappear due to the recrystallization process, and the longitudinal strength of products will be reduced. The greater the degree of deformation, the shorter the holding time.