YC series self-hardening furan resin is an environmentally friendly casting adhesive used to make sand molds (cores). Different types of furan resin can be used to cast various metals, such as cast steel, cast iron, and cast non-ferrous metals. Its appearance is light yellow to reddish brown transparent liquid.
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Shandong Yongchuang Material Technology Co., Ltd
YC series self hardening furan resin is an environment-friendly casting adhesive used for making sand mold (core). Different types of furan resin can be used to cast various metals, such as cast steel, cast iron, cast nonferrous metals, etc. Its appearance is light yellow to reddish brown transparent liquid.
Product benefits
1. Low viscosity: low resin viscosity, easy to mix sand, good fluidity of molding sand.
2. High strength, saving production cost: The resin has high strength, which can reduce the resin addition by 10% - 20%, reducing the production cost.
3. Fast curing speed: The resin has fast curing speed, which can shorten the production cycle and improve the production efficiency.
4. Green and environmental protection: low gas emission during sand mixing molding, free formaldehyde can be controlled below 0.05%, which is lower than free formaldehyde of ordinary resin. The amount of resin added is lower than that of ordinary resin, so the pollution to the environment and workers' workplaces is greatly reduced.
5. Stable quality and performance: the resin is synthesized by a new process, and the entire production process is automatically controlled by the computer, avoiding the influence of human factors and ensuring the stable quality of the resin.
6. It can improve the quality and yield of castings: the reduction of resin addition will reduce the gas generation of the core, which is conducive to reducing or eliminating the porosity defects of castings; Due to the fast curing speed, the addition amount of curing agent is correspondingly reduced, which can reduce the defects of sulfur increase and spheroidization on the casting surface.
7. High recovery rate of used sand: the recovery rate of used sand is up to 97%.
8. Good collapsibility: better than other ordinary resins.
9. Good high temperature performance: good high temperature performance, less casting defects, and accurate casting size.
10. No need to add silane during molding and core making: under any conditions, no need to add silane can meet the production needs and simplify the operation of workers.
Specification and model
| Model | Nitrogen content % | Viscosity mPa.s(20°C) | Density g/cm³(20°C) | Free formaldehyde % | Scope of application |
|---|---|---|---|---|---|
| YCW | Nitrogen free | ≤60 | 1.10-1.25 | ≤0.3 | Cast steel |
| YC100 | ≤1.0 | ≤60 | 1.10-1.25 | ≤0.3 | Cast steel, large ductile iron |
| YC150 | ≤1.5 | ≤60 | 1.10-1.25 | ≤0.3 | Cast steel, large ductile iron, large gray iron |
| YC200 | ≤2.0 | ≤60 | 1.10-1.25 | ≤0.3 | Large ductile iron, large gray iron |
| YC300 | ≤3.0 | ≤60 | 1.10-1.25 | ≤0.3 | Ductile iron, large gray iron |
| YC400 | ≤4.0 | ≤60 | 1.10-1.25 | ≤0.3 | Ductile iron, gray iron |
| YC500 | ≤5.0 | ≤60 | 1.10-1.25 | ≤0.3 | Ductile iron, gray iron |
| YC550 | ≤5.5 | ≤150 | 1.10-1.25 | ≤0.3 | Gray cast iron |
| YC600 | ≤6.0 | ≤150 | 1.10-1.25 | ≤0.3 | Gray iron, nonferrous metal alloy |
| YC650 | ≤6.5 | ≤150 | 1.10-1.25 | ≤0.3 | Gray iron, nonferrous metal alloy |
| YC700 | ≤7.0 | ≤150 | 1.10-1.25 | ≤0.3 | Gray iron, nonferrous metal alloy |
| YC750 | ≤7.5 | ≤150 | 1.10-1.25 | ≤0.3 | Nonferrous metal alloy |
| YC800 | ≤8.0 | ≤150 | 1.10-1.25 | ≤0.3 | Nonferrous metal alloy |
| quality guarantee period | 12 months | ||||
| notes | According to customer needs and customer requirements for product indicators, special products can be developed to meet production needs | ||||
Usage method
1. Core sand proportion
Sand: 100
Resin: 0.7% - 1.5% (sand weight)
Curing agent: 30% - 70% (weight of resin)
2. Sand mixing process
(1) The continuous sand mixer is generally of the cage type, and the curing agent and resin are added successively through the quantitative pump.
(2) The bowl type sand mixer is a high-speed sand mixer. Generally, the sand mixing process is: sand+curing agent mixing time is 10-30 seconds, and resin mixing time is 10-30 seconds.
(3) The grinding wheel type sand mixer is a slow intermittent type sand mixer. Generally, the sand mixing process is: sand+curing agent mixing time is 60 seconds to 80 seconds, and then add resin to mix for 60 seconds to produce sand.
(4) There are two ways to mix sand manually:
A: Add resin after manually mixing sand+curing agent, and use after manually mixing as soon as possible. (within 1 minute)
B: Sand+curing agent shall be mixed evenly and then put into a container to be sealed for use; Sand+resin are mixed evenly and then put into a container for sealing
When using, take two kinds of mixed molding sand with the same weight, mix them evenly by hand, and then use them. (within 1 minute)
3. Selection of resin dosage
As the original sand grain shape, particle size, mud content and other indicators used by various manufacturers are quite different, and the weight and complexity of the mold and core are different, the amount of resin added should be based on the principle of meeting the production needs, and the amount of resin added should be reduced as far as possible on the premise that the strength meets the production requirements.
4. Control of demoulding time
The demoulding time can be adjusted within 10-90 minutes, usually 15-40 minutes. The demoulding time should be carefully judged. If the demoulding is too early, the mold will stick or even damage the sand mold, core or box collapse; Too late demoulding will make it difficult to demould or even damage the mold, core or model.
5. Curing speed control
To accelerate the curing speed, increase the amount of curing agent (not more than 70% of the resin amount) or replace the curing agent with faster curing speed. To reduce the curing speed, reduce the amount of curing agent (not less than 30% of the resin amount) or replace the curing agent with slow curing speed.
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