一种改善型整体内衬套料管
By improving the integral inner liner tube, using a double-layer inner liner made of high-chromium and high-molybdenum hot work die steel and a double-circulation cooling system, the problems of corrosion at the pouring port and uneven cooling of the tube are solved, the service life is increased and the production cost is reduced, making it suitable for the aluminum die casting industry.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU XINYONGLONG SPECIAL EQUIP PARTS CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional feed tubes suffer from problems such as corrosion at the pouring port, uneven cooling leading to fluctuations in molten liquid temperature, and easy wear of the inner lining, which affect service life and product quality.
An improved integral inner liner tube was designed, which uses a double-layer inner liner and a double-circulation cooling system made of high-chromium and high-molybdenum hot work die steel. It includes a front-end annular water channel and a rear-end through water channel. Combined with interference fit and full circumferential welding connection, it forms a non-removable structure to ensure uniform cooling and wear resistance.
It increases the service life of the feed tube by 2.0-2.5 times, reduces production costs, and further reduces production costs through a high-performance inner liner structure, making it suitable for the aluminum die-casting industry.
Smart Images
Figure CN224508420U_ABST
Abstract
Claims
1. An improved integral inner liner tubing, characterized by, include: Material pipe body: One end is provided with a flared aluminum liquid pouring port, the other end is provided with a rear water inlet and outlet hole, and the outer side of the middle part is provided with a mold end water inlet and outlet hole; the expansion angle of the aluminum liquid pouring port is 15-30°; Front cooling jacket: It is fixedly connected to the material tube body by interference fit and full welding around the perimeter, forming a non-removable integral structure; Double-layer inner bushing: including bushing A and bushing B, which are sequentially embedded in the inner cavity of the tube body. Both bushing A and bushing B are made of hot work die steel containing high chromium and high molybdenum, and the surface of the inner bushing is nitrided. Dual-cycle cooling system, including: Front-end cooling circuit: connected to an annular water channel inside the front-end cooling sleeve through water inlet and outlet holes at the mold end, the annular water channel comprising at least 3 sets of annular cooling grooves spaced apart along the material tube axis; Rear cooling circuit: Four circulating cooling water channels that run through the material tube body are connected through the rear water inlet and outlet holes. The four channels are evenly distributed along the circumference of the material tube and are parallel to each other.
2. An improved integral bushing tubular as defined in Claim 1, wherein, The interference fit tolerance between the front cooling jacket and the material tube body is H7 / p6. The circumferential full welding adopts pulse argon arc welding, with a weld height ≥1.5mm and a penetration depth ≥2mm.
3. An improved integral bushing tubular as defined in Claim 2, wherein, The three sets of annular cooling tanks in the annular water channel are distributed at intervals along the axis of the material pipe, with an adjacent tank spacing of 20-50mm. Each set of cooling tanks has a trapezoidal cross-section, a depth of 8-12mm, and a width of 15-25mm.
4. An improved monobore bushing as defined in claim 3 wherein, The four circulating cooling water channels have a diameter of Φ8-Φ12mm, are evenly distributed along the circumference of the material tube body, and have an angle of 5-10° with the axis of the material tube, forming a spiral cooling path.
5. The improved monobore bushing of claim 1 wherein, The aluminum liquid pouring port is flared, with an expansion angle of 15-30°, and the inner wall of the pouring port is flush with the front end of the bushing A.