钢砂的生产工艺：

Production technology of steel shot:

钢砂的原材料是高碳钢或合金钢的废钢料。

Steel shot of raw material is high carbon steel or alloy steel scrap.

　　一种直接利用废钢料制备钢砂的工艺。包括以下步骤：

Preparation of steel shot a direct use of steel scrap process. Includes the following steps:

　　处理；

Processing;

　　(2)将加热淬火后的废钢料放入破碎机进行破碎，获得钢砂半成品；

(2) after quenching steel scrap into the crusher for crushing, get shot semi-finished products;

　　(3)将钢砂半成品筛选分类，即制得成品钢砂。本发明的钢砂生产方法，减少了传统钢砂生产工艺必须先铸造成钢丸的废钢料熔炼和造丸工序，大大节省了生产成本。

(3) the steel grit semi-finished screening classification, namely was finished steel grit. The invention of steel grit production method, reduces the traditional production method of steel shot must first casting pills for Angle steel scrap melting and build process, greatly saves the cost of production.

　　还有一种钢砂生产方法，其特征在于包括以下步骤：

Still have a kind of steel grit production method, its character is that includes the following steps:

　　(1)将加热淬火后的废钢料放入破碎机进行破碎，获得钢砂半成品；

(1) after quenching steel scrap into the crusher for crushing, get shot semi-finished products;

　　(2)将钢砂半成品筛选分类，即制得成品钢砂。

(2) the steel grit semi-finished screening classification, namely was finished steel grit.

钢砂主要性能

Steel grit main performance

规格等级：G240～G005；

Specifications and grades: G240 ~ G005;

显微硬度：390HV-530HV；470HV-610HV；570HV-710HV；≥700HV

390 hv - 530 hv microhardness:; 470 hv - 610 hv; 570 hv - 710 hv; P 700 hv

化学组成：碳：0.8%-1.2%、锰：0.35%-1.2%、硅：≥0.4%、硫、磷：≤0.05%；

Chemical composition: carbon: 0.8% 1.2%, mn: 0.35% - 1.2%, silicon: 0.4%, sulfur, phosphorus or higher: 0.05% or less;

金相组织：回火马氏体或回火屈氏；

Microstructure: tempered martensite or tempering closely;

密度≥7.0g/cm3；

Acuity 7.0 g/cm3 density;

缺陷总量≤40%；

Defect total 40% or less;

外来杂质≤1%；

Foreign material 1% or less;

含水量≤0.2%。

Water content of 0.2% or less.

原标准GB6485----86 铸钢砂已于1993年废止。

The original standard GB6485-86 cast steel shot has been abolished in 1993.

由于回火铁砂退火后，表面颜色显均匀蓝色，常常用回火铁砂冒充铸钢砂，铁砂使用寿命只有50－400次，铁砂除锈效果严重降低、严重损害用户利益。

Due to tempering iron ore after annealing, the surface color uniform blue, often with tempering iron ore as cast steel shot, only 50-400 times the service life of the iron ore, iron ore descaling effect seriously reduce, serious harm the interests of the users.

钢砂型号：

Steel shot models:

铸钢砂型号：G10/SG2.5 G12/SG2.0 G14/SG1.7 G16/SG1.4 G18/SG1.2 G25/SG1.0 G40/SG0.7 G50/SG0.4 G80/SG0.3 G120/SG0.2

Cast steel shot models: G10 / SG2.5 a G12 / SG2.0 / the G14 SG1.7 G16 / SG1.4 G18 / SG1.2 G25 / SG1.0 G40 / SG0.7 G50 / SG0.4 G80 / SG0.3 G120 / SG0.2