Today, we want to share with you in our Difeng small class is:
"casting solidification method".
According to the width of the solid-liquid two-phase region,
the solidification methods of castings
can generally be divided into three types:
When the solid-liquid two-phase region is very narrow,
it is called layer-by-layer solidification,
otherwise it is mushy solidification.
0ne. The alloys that are solidified layer by layer
have better feeding properties,
are not prone to thermal cracking,
and are easy to obtain dense castings.
The alloys that are solidified layer by layer include gray cast iron,
low carbon steel, etc.
2. Alloys that belong to volume solidification include ductile iron,
high carbon steel, etc.
It is generally believed that the volume solidification alloys
have poor feeding properties and are prone to hot cracks,
making it difficult to obtain dense castings.
3. If the crystallization temperature range of the alloy is narrow,
or the temperature difference of the casting section is large,
and the width of the solidification area on the casting section is
between layer-by-layer solidification and volume solidification,
it belongs to the intermediate solidification mode.
Follow me, the youngest girl in the factory,
see you in the next issue~
"casting solidification method".
According to the width of the solid-liquid two-phase region,
the solidification methods of castings
can generally be divided into three types:
When the solid-liquid two-phase region is very narrow,
it is called layer-by-layer solidification,
otherwise it is mushy solidification.
0ne. The alloys that are solidified layer by layer
have better feeding properties,
are not prone to thermal cracking,
and are easy to obtain dense castings.
The alloys that are solidified layer by layer include gray cast iron,
low carbon steel, etc.
2. Alloys that belong to volume solidification include ductile iron,
high carbon steel, etc.
It is generally believed that the volume solidification alloys
have poor feeding properties and are prone to hot cracks,
making it difficult to obtain dense castings.
3. If the crystallization temperature range of the alloy is narrow,
or the temperature difference of the casting section is large,
and the width of the solidification area on the casting section is
between layer-by-layer solidification and volume solidification,
it belongs to the intermediate solidification mode.
Follow me, the youngest girl in the factory,
see you in the next issue~
