What are the criteria for determining the T0, T1, and T2 stages of casting mold trial

What are the criteria for determining the T0, T1, and T2 stages of casting mold trial
Mold trial is divided into multiple rounds of iteration, T0, T1, and T2 are common nodes for foreign trade casting projects, and customers determine whether to enter the next stage based on the samples.
The T0 stage mainly verifies the filling, sprue, and exhaust structures, allowing for obvious defects, with the goal of obtaining complete molded castings.
The proportion of defects such as porosity, cold insulation, and insufficient pouring in T0 samples can reach 25%, with a focus on recording the flow front of the aluminum liquid and the location of filling defects.
The T1 stage relies on T0 data to adjust the sprue, exhaust, and cooling, with the goal of eliminating fatal defects, ensuring stable casting formation, and a yield rate greater than 60%.
The T1 sample needs to undergo basic flaw detection, eliminate major internal defects, and control the dimensional deviation within 0.3mm.
Optimize detailed parameters in T2 stage, stabilize yield, and meet all acceptance criteria for customer drawing tolerances, metallography, and non-destructive testing.
T2 stable yield is generally required to be ≥ 85%, and samples can be sent to third-party laboratories for fatigue and tensile performance testing.
The OE supporting project in Mexico has a strict T2 sample review process, which requires simultaneous submission of CAE reports and dimensional inspection records.
After each round of trial molding, Xinfeng Machinery outputs a trial molding report, indicating the defect location, rectification plan, and direction for the next round of adjustment.
Many purchasing customers mistakenly believe that T0 trial mold qualification means that the mold can be put into production, and skipping T1 and T2 will result in batch defects in mass production.
The iteration pace of gravity casting mold trial is faster, and most simple wheel hub molds can complete acceptance after 2 rounds of trial molding.
CPC reverse pressure molds have multiple variables, and the coupling of pressure, filling speed, and cooling affects molding, often requiring more than 3 rounds of mold testing.
Google aluminum casting mold T0 T1 T2 trial standard belongs to the long tail keywords of procurement decision-making, which are frequently searched by project leaders.
This content is suitable for the management needs of B-end procurement projects, helping customers understand the trial molding cycle and plan the project schedule reasonably.
The aluminum liquid temperature, filling pressure, and cooling water pressure parameters during the trial molding stage need to be fully recorded as the benchmark parameters for mass production.
Incomplete parameter records make it difficult for on-site process personnel to reproduce the status of qualified samples when the molds are delivered to the customer's factory.
Some customers require large-scale production during the T1 stage, with significant fluctuations in defects and a rapid increase in scrap costs.
The qualification of the trial mold does not mean the delivery of the mold. The completion of T2 and the verification of the sample by the customer's laboratory are the technical acceptance nodes.
Indian customers have a low tolerance for the trial molding cycle and often hope that T0 can be directly met, requiring prior communication on the trial molding judgment rules.
Priority should be given to adjusting process parameters for trial mold rectification. If the parameters cannot be solved, then modify the mold cavity, runner, and exhaust structure.

## FAQ

Q: What is the core objective of T0 trial model?
A: Obtain a complete molded casting and observe the filling flow state.
Q: What is the bottom line for the qualified yield rate of T1 trial mold?
A: Eliminate fatal defects and achieve a stable yield rate of over 60%.
Q: What is the yield requirement for T2 trial model compliance?
A: Generally, a stable yield rate of ≥ 85% is required to meet all acceptance criteria.
Q: How many rounds of simple gravity wheel hub mold trial?
A: Most of them can complete the acceptance after two rounds of trial molding.
Q: How difficult is the CPC mold trial?
A: There are many variables, often requiring 3 or more rounds of trial iterations.
Q: What tests are required for T2 samples?
A: Customers require performance testing such as non-destructive testing, metallography, and tensile fatigue testing.
Q: Is it normal for the defect rate of T0 samples to be high?
A: T0 allows for higher defects and is only used for observing the filling process.
Q: What is the value of recording trial parameters?
A: Provide to the customer's factory for reproducing qualified molding conditions.