316L stainless steel structure, preparation material and preparation method
A technology of stainless steel and metal materials, used in metal processing equipment, transportation and packaging, etc., can solve the problems of reduced product service life, easy deformation of products, poor wear resistance, etc., to avoid waste, avoid variability, and improve wear resistance. Effect
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[0039] The invention develops a preparation material of 316L stainless steel, which can also be called high-hardness 316L stainless steel powder metallurgy material, which makes its performance advantages more perfect, and solves the variability and wear resistance of 316L stainless steel products processed by traditional powder metallurgy processes Defects such as poor performance, combined with powder metallurgy technology, will further expand the application market of MIM technology.
[0040] For example, the metal material includes the following components by mass ratio: 93.6%-95% of 316L stainless steel powder, 1%-1.2% of titanium carbide powder, 1.5%-2.5% of chromium carbide powder, and 1.5%-2.5% of molybdenum carbide powder %. As another example, the metal material includes the following components by mass ratio: 316L stainless steel powder 93.8% to 94.2%, titanium carbide powder 1% to 1.1%, chromium carbide powder 1.8% to 2.2%, and molybdenum carbide powder 1.8% to 2....
Embodiment example 1
[0080] The preparation material of 316L stainless steel is 20000g (100%) including 19200g of metal material (96%=19200 / 20000) and 800g of binder (4%=800 / 20000).
[0081] Specifically, 19200g (100%) of metal materials include:
[0082]
[0083] Binder 800g (100%) includes:
[0084] Polyethylene glycol 2000 560g (70%=560 / 800),
[0085] Stearic acid 240g (30%=240 / 800).
[0086] The preparation method comprises the following steps:
[0087] 1. Heat the prepared binder in a constant temperature water bath for 30 minutes until it melts, and set the temperature of the constant temperature water bath to 65°C.
[0088] 2. Preheat the configured metal material to 70°C.
[0089] 3. Add the melted binder and the preheated metal material into the planetary ball mill, and then pour in absolute ethanol for mixing. The ratio of the volume of added ethanol to the total volume of the binder and metal material is 1:2; the volume occupied by ball milling beads in the ball mill is 1 / 3. Ba...
Embodiment example 2
[0094] The preparation material of 316L stainless steel is 20000g (100%) including 19400g of metal material (97%=19400 / 20000) and 600g of binder (3%=600 / 20000).
[0095] Specifically, 19400g (100%) of metal materials include:
[0096]
[0097] Binder 600g (100%) includes:
[0098] Macrogol 2000 420g (70%),
[0099] Stearic acid 180g (30%).
[0100] The preparation method comprises the following steps:
[0101] 1. Heat the prepared binder in a constant temperature water bath for 40 minutes until it melts, and set the temperature of the constant temperature water bath to 70°C.
[0102] 2. Preheat the configured metal material to 90°C.
[0103] 3. Add the melted binder and the preheated metal material into the planetary ball mill, and then pour in absolute ethanol for mixing. The ratio of the volume of added ethanol to the total volume of the binder and metal material is 1:1; the volume occupied by ball milling beads in the ball mill is 1 / 3. Wherein, ball mill speed: 35r...
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