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Engine cylinder block water channel sand core and preparation process thereof

An engine block and preparation process technology, which is applied in the field of engine parts casting, can solve the problems of poor inner cavity cleanliness, high cleaning difficulty, veining defects, etc., and achieves the effects of easy cleaning, good collapsibility, and strong veining ability.

Inactive Publication Date: 2019-12-13
SINO TRUK JINAN POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waterway core of the engine cylinder block is covered by molten iron. If it is in contact with molten iron for a long time, it is easy to cause local sticky sand, which is difficult to clean and the cleanliness of the inner cavity is poor.
[0005] (2) Vein defects

Method used

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  • Engine cylinder block water channel sand core and preparation process thereof
  • Engine cylinder block water channel sand core and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A sand core for an engine block waterway, comprising the following components: 120kg of quartz sand, 30kg of chromite sand, 0.75kg of iron oxide powder, 1.275kg of resin component I, and 1.275kg of resin component II.

[0028] A kind of sand core of engine block water channel, the specific preparation method is as follows:

[0029] (1) Add 120kg of quartz sand, 30kg of chromite sand, and 0.75kg of iron oxide powder to the reaction kettle in sequence, start stirring, control the stirring speed at 100-150 rpm, and stir evenly at 20-30°C.

[0030] (2) Add 1.275 kg of resin component I and 1.275 kg of resin component II under stirring, control the stirring speed at 100-150 rpm, mix at 20-30°C for 60-90 seconds, and then produce sand.

Embodiment 2

[0032] A sand core for an engine block waterway, comprising the following components: 120kg of quartz sand, 30kg of chromite sand, 0.75kg of iron oxide powder, 1.2kg of resin component I, and 1.2kg of resin component II.

[0033] A kind of sand core of engine block water channel, the specific preparation method is as follows:

[0034] (1) Add 105kg of quartz sand, 45kg of chromite sand, and 0.75kg of iron oxide powder to the reaction kettle in sequence, start stirring, control the stirring speed at 100-150 rpm, and stir evenly at 20-30°C.

[0035] (2) Add 1.120 kg of resin component I and 1.120 kg of resin component II under stirring, control the stirring speed at 100-150 rpm, mix at 20-30°C for 60-90 seconds, and then produce sand.

Embodiment 3

[0037] A sand core for an engine block waterway, comprising the following components: 120kg of quartz sand, 30kg of chromite sand, 1.5kg of iron oxide powder, 1.275kg of resin component I, and 1.275kg of resin component II.

[0038] A kind of sand core of engine block water channel, the specific preparation method is as follows:

[0039] (1) Add 120kg of quartz sand, 30kg of chromite sand, and 1.5kg of iron oxide powder to the reaction kettle in sequence, start stirring, control the stirring speed at 100-150 rpm, and stir evenly at 20-30°C.

[0040] (2) Add 1.275 kg of resin component I and 1.275 kg of resin component II under stirring, control the stirring speed at 100-150 rpm, mix at 20-30°C for 60-90 seconds, and then produce sand.

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Abstract

The invention discloses an engine cylinder block water channel sand core and a preparation process thereof, and belongs to the technical field of engine part casting. The engine cylinder block water channel sand core is prepared from the following components in parts by weight: 70-80 parts of quartz sand, 20-30 parts of chromite sand, 0.5-1 part of iron oxide powder, 0.75-0.85 part of a rein component I, and 0.75-0.85 part of a rein component II. The engine cylinder block water channel sand core has the following advantages that (1) the sand penetration and veining preventing capacity is high,the molten iron pouring amount of a casting is 350 KG, the pouring temperature is 1380-1400 DEG C, an inner cavity of a water channel is free of the sand penetration and veining defects, collapsibility is good, clearing is easy, and the cleanliness of the inner cavity is good; and (2) the core manufacturing efficiency of a cold-box preparation process is high, a triethylamine catalytic curing process is used, the core manufacturing efficiency is high, and the engine cylinder block water channel sand core is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of engine parts casting, and in particular relates to an engine cylinder waterway sand core and a preparation process thereof. Background technique [0002] With the continuous development of the industry and the continuous improvement of customer needs, the requirements for the overall stability and durability of the engine are becoming more and more stringent. However, the quality of the inner cavity of the engine water channel has a significant impact on the performance of the engine. The cleanliness of the inner cavity of the water channel is poor, which seriously affects the cooling effect of the engine and shortens the life of the engine. [0003] The sand core of the engine cylinder waterway is covered by molten iron, which is prone to appearance quality defects such as sand sticking and veining in the inner cavity of the waterway, mainly as follows: [0004] (1) The inner cavity is easy to stick san...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10B22C1/02
CPCB22C1/02B22C9/10
Inventor 郭毅薛庆云侯广怀曹恒成
Owner SINO TRUK JINAN POWER
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