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An improved process and apparatus for casting a strip with laterally extending lugs by introducing molten metal at the inlet of a molding zone having a bottom and sidewalls, the bottom of the molding zone being formed by the upper surface of a moving endless belt and the sidewalls being formed by a

An improved process and apparatus for casting a strip with laterally extending lugs by introducing molten metal at the inlet of a molding zone having a bottom and sidewalls, the bottom of the molding zone being formed by the upper surface of a moving endless belt and the sidewalls being formed by a first and second moving endless sidedam. The sidedams move with the belt from the inlet to the outlet of the molding zone and return from the outlet to the inlet. Each sidedam comprises an endless strap and a multiplicity of blocks strung thereon. Some of the blocks form lug molding pockets, the height of each pocket being lower than the height of the molding zone. A cast strip with laterally extending lugs is extracted at the outlet of the molding zone. The passage of lug molding pockets or blocks forming these pockets in each sidedam is detected. The difference between the temperatures of the first and the second sidedams is corrected so as to change the advancing speed of at least one of these dams, a warmer sidedam moving slower than a colder sidedam, if an unwanted lag is found between the molding pockets of the first sidedam and those of the second sidedam. The improvement comprises controlling the result of the correction measures by detecting the passage of the externally extending lugs in the cast product, modifying the correction as a function of the lug detection, and modifying the difference between the temperatures of the first and the second sidedams by use of cooling and heating units.

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In a process for casting a strip with laterally extending lugs by: introducing molten metal into the inlet of a molding zone having a bottom and sidewalls, the bottom of the molding zone being formed by the upper surface of a moving endless belt and the sidewalls being formed by a first and second m

In a process for casting a strip with laterally extending lugs by: introducing molten metal into the inlet of a molding zone having a bottom and sidewalls, the bottom of the molding zone being formed by the upper surface of a moving endless belt and the sidewalls being formed by a first and second moving endless sidedam, said sidedams moving with the belt from the inlet to the outlet of the molding zone at a predetermined casting speed in linear travel distance per unit of time and returning outside of the molding zone from the outlet to the inlet, each sidedam comprising an endless strap and a multiplicity of blocks strung thereon, some of said blocks forming lug molding pockets, and the height of each pocket being lower than the height of the molding zone; extracting a cast strip with laterally extending lugs from the outlet of the molding zone; detecting the passage of lug molding pockets or blocks forming these pockets on each sidedam; and correcting the difference between the temperatures of the first and the second sidedams so as to change the advancing speed of at least one of these dams, a warmer sidedam moving slower than a colder sidedam, if an unwanted lag is found between the molding pockets of the first sidedam and those of the second sidedam; the improved method of synchronizing the actual positions of the respective cast lugs on opposite edges of the cast strip comprising the steps of: detecting a first difference in the time of the passage of lug molding pockets or blocks forming these pockets of the first and second sidedams near the inlet of said molding zone; detecting a second difference in the time of the passage of the laterally extending cast lugs on the opposite edges of the cast strip near the outlet of said molding zone; multiplying said first time difference by the predetermined casting speed to obtain the value L1 of the linear lag between the respective advancing movements of the pockets of the first and second sidedams; multiplying said second time difference by the predetermined casting speed to obtain the value L2 of the linear lag between the respective advancing movements of the cast lugs on opposite edges of the cast strip; comparing the pocket linear lag value L1 with a first predetermined linear lag value L1C and using the difference therebetween as the basis for correcting said difference in temperatures for changing the speed of advancing of at least one of the two sidedams for attempting to synchronize their advancing movements through the molding zone; comparing the lug linear lag value L2 with a second predetermined linear lag value L2C; and modifying the first predetermined linear lag value L1C as a function of the difference between the lug linear lag value L2 and the second predetermined linear lag value L2C for improving the synchronizing of the respective advancing movements of the cast lugs on opposite edges of the cast strip. An apparatus for casting a strip with laterally extending lugs by introducing molten metal into the inlet of a molding zone having a bottom and sidewalls, the bottom of the molding zone being formed by the upper surface of a moving endless belt and the sidewalls being formed by a first and second moving endless sidedam, said sidedams moving with the belt from the inlet to the outlet of the molding zone at a predetermined speed in linear travel distance per unit of time and returning outside of the molding zone from the outlet to the inlet, each sidedam comprising an endless strap and a multiplicity of blocks strung thereon, some of said blocks forming lug molding pockets, and the height of each pocket being lower than the height of the molding zone, and wherein the cast strip with laterally extending lugs on each edge is extracted from the outlet of the molding zone, including means for detecting the passage of lug molding pockets or blocks forming these pockets on each sidedam, and cooling means for correcting the difference between the temperature of the first and the second sidedams so as to change the advancing speed of at least one of these dams, a warmer sidedam moving slower than a colder sidedam, if an unwanted lag is found between the molding pockets of the first sidedam and those of the second sidedam, apparatus for synchronizing the actual positions of the respective cast lugs on opposite edges of the cast strip comprising: first detecting means for detecting a first difference in the time of the passage of lug molding pockets or blocks forming these pockets of the first and second sidedams near the inlet of said molding zone; second detecting means for detecting a second difference in the time of the passage of the laterally extending cast lugs on the opposite edges of the cast strip near the outlet of said molding zone; heating means for heating each of said sidedams; control means for controlling said heating and cooling means, said first and second detecting means being connected to said control means, said control means including multiplying means for multiplying said first time difference by the predetermined casting speed to obtain the value L1 of the linear lag between the respective advancing movements of the pockets of the first and second sidedams and for multiplying said second time difference by the predetermined casting speed to obtain the value L2 of the linear lag between the respective advancing movements of the cast lugs on opposite edges of the cast strip; said control means including comparator means for comparing the pocket linear lag value L1 with a first predetermined linear lag value L1C, said control means using the difference therebetween as the basis for controlling said heating means and said cooling means for correcting said difference in temperatures for changing the speed of advancing of at least one of the two sidedams for attempting to synchronize their advancing movements through the molding zone; said control means including second comparator means for comparing the lug linear lag value L2 with a second predetermined linear lag value L2C; and said control means modifying the first predetermined linear lag value L1C as a function of the difference between the lug linear lag value L2 and the second predetermined linear lag value L2C for improving the synchronizing of the respective advancing movements of the cast lugs on opposite sides of the cast strip.