Self-hardening resin sand for mold design and preparation method of self-hardening resin sand
A technology of mold design and resin sand, which is applied in the direction of casting molding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of mold size difference, production difficulty, casting quality is not easy to be guaranteed, etc., to achieve stable and reliable shrinkage, reduce The effect of size deviation and accuracy improvement
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Embodiment 1
[0020] A no-bake resin sand used for mold design, which consists of the following components in parts by weight: 100 parts of raw sand, 3 parts of resin, and 0.9 parts of curing agent.
[0021] At the same time, the invention also discloses a method for preparing self-setting sand resin sand for mold design, including the following steps:
[0022] S1: First prepare 100 parts of raw sand, and perform a preliminary filtering operation on it to prevent the internal debris from affecting the effect of later mixed molding;
[0023] S2: Then, 100 parts of the original sand are ground with grinding equipment for multiple materials, and the grinding time is 60 minutes;
[0024] S3: Stir and mix 100 parts of raw sand after grinding and 3 parts of resin, the mixing time is 2-8 minutes, and the processing temperature is 120°C during mixing to obtain the mixture;
[0025] S4: After that, heat and mix the completed mixture and 0.9 parts of the curing agent using a sand mixer, where the he...
Embodiment 2
[0030] A no-bake resin sand used for mold design, which consists of the following components in parts by weight: 100 parts of raw sand, 1 part of resin, and 0.3 part of curing agent.
[0031] At the same time, the invention also discloses a method for preparing self-setting sand resin sand for mold design, including the following steps:
[0032] S1: First prepare 100 parts of raw sand, and perform a preliminary filtering operation on it to prevent the internal debris from affecting the effect of later mixed molding;
[0033] S2: Then, 100 parts of the original sand are ground with grinding equipment for multiple materials, and the grinding time is 30 minutes;
[0034] S3: Stir and mix 100 parts of raw sand after grinding and 1 part of resin, the mixing time is 2 minutes, and the processing temperature is 100°C during mixing to obtain a mixture;
[0035] S4: After that, heat and mix the completed mixture and 0.3 parts of curing agent using a sand mixer, where the heating tempe...
Embodiment 3
[0040] A no-bake resin sand used for mold design, which consists of the following components in parts by weight: 100 parts of raw sand, 2 parts of resin, and 0.6 part of curing agent.
[0041] At the same time, the invention also discloses a method for preparing self-setting sand resin sand for mold design, including the following steps:
[0042] S1: First prepare 100 parts of raw sand, and perform a preliminary filtering operation on it to prevent the internal debris from affecting the effect of later mixed molding;
[0043] S2: Then, 100 parts of the original sand were ground with grinding equipment for multiple materials, and the grinding time was 45 minutes;
[0044] S3: Stir and mix 100 parts of raw sand after grinding and 2 parts of resin, the mixing time is 6 minutes, and the processing temperature is 110°C during mixing to obtain a mixture;
[0045] S4: After that, heat and mix the completed mixture and 0.6 parts of curing agent using a sand mixer, where the heating t...
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Abstract
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