NNX-D929 Passenger car alloy wheels 20 inch forged black aluminum wheel rim

NNX-D929 19X9 19X10 ET 25 45 P.C.D 5X112 center hole 66.6 1piece forged wheel (custom 16-24inch any date)

The alloy deterioration in melting

During the melting process, the A356 alloy deteriorated. The essence of deterioration is to change the form of chip -shaped silicon crystals and refine common crystal silicon. After the heat treatment, the common crystal silicon is spherical or near -ball. Fully deterioration or sharp metamorphosis. The overall deterioration effect is good, and the size effect is small, but the casting is prone to pinholes defects, resulting in the polishing wheel and electroplating wheels difficult to pass; the deterioration effect of the cake is poor, the size effect is obvious, but the pointed wheels are small. favorable.
The German metamorphic wheel generally uses Alsrlo alloy, which is added before the middle packaging, and the addition amount is 0.025%, but the mixture contains
0.012 ~ 0.020%of the SR content in castings is 0.008 ~ 0.018%. Control the SR content in this range not only ensures complete changes
The quality should also ensure that the pinhole is less. During the casting process, if the process control is ideal, you can generate pinhole without the polishing surface, thereby solving the pinhole problem of polishing wheels and electroplating wheels. Takaraka Kana has some deterioration wheels to add pure grains to modify in production. Money is a permanent modified agent. It can still have a modified effect for 100 hours. The brocade did not have oxidative losses during the smelting process. The boiling point of 4 is 1450V, and the boiling point of aluminum is 2500 ° C. Therefore, the loss of aluminum liquid is volatile losses. There are many disadvantages to add pure equipment in production:
The first lesson is 6.67g/cm3, which is 2.5 times that of aluminum. It is easy to discrete, and it will sink if it is not stirred.

2. If the refining agent and the residue contain NA ions, NA and Takaraka Kana combine NA3SB to affect the deterioration of the currency;
3. The proportion of 生 and A1 to generate ALSBALSB is high, it will sink, it will easily lead to bias, and it will also affect the deterioration ability of.
4. Baht and magnesium will produce MG3SB2, which will also affect the deterioration ability of the hammer. For the above reasons, it is best to add Al-SB8+intermediate alloys in production instead of pure pointed deterioration. The most ideal thing is to add Al-SB8-MG2 intermediate alloys, but due to the high price of aluminum alloy, production costs will increase. If the money is added to the A356 alloy ingots, after the melting, NA _ 3SB and AL _ SB? None of the existence (because it is unstable compound), the 钐 will still deteriorate. The pure 度 should be added in a static furnace with^10mm. For spoiled wheels, the content of MG is best at 0.40 ~ 0.45%, because SB and MG will generate stable MG3SB2, and a certain amount of MG will be consumed. If it is not controlled at the upper limit, the MG2Si will be less, and the effect of time -enhancement is not satisfactory.

• Min.Order Quantity: 4 Piece/Pieces
• Supply Ability: 100000 Piece/Pieces per Month