铸造中按H8与H7级精度加工已预先铸出或热冲出的孔的余量
<DIV align=center> 按H8与H7级精度加工已预先铸出或热冲出的孔的余量 （单位：mm）</DIV><DIV align=center><TABLE cellSpacing=0 cellPadding=0 width=697 border=1><TBODY><TR><TD vAlign=top width=44 rowSpan=3><DIV>加工孔的直径</DIV></TD><TD noWrap colSpan=5><DIV align=center>直径</DIV></TD><TD vAlign=top width=45 rowSpan=3><DIV>加工孔的直径</DIV></TD><TD noWrap colSpan=5><DIV align=center>直径</DIV></TD></TR><TR><TD noWrap colSpan=2><DIV align=center>粗镗</DIV></TD><TD width=51 rowSpan=2><DIV align=center>半精镗</DIV></TD><TD width=65 rowSpan=2><DIV align=center>粗铰或一次半精镗</DIV></TD><TD width=46 rowSpan=2><DIV align=center>精铰或精镗</DIV></TD><TD noWrap colSpan=2><DIV align=center>粗镗</DIV></TD><TD width=65 rowSpan=2><DIV align=center>半精镗</DIV></TD><TD width=75 rowSpan=2><DIV align=center>粗铰或一次半精镗</DIV></TD><TD width=47 rowSpan=2><DIV align=center>精铰或精镗</DIV></TD></TR><TR><TD noWrap><DIV>第一次</DIV></TD><TD noWrap><DIV>第二次</DIV></TD><TD noWrap><DIV>第一次</DIV></TD><TD noWrap><DIV>第二次</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>30</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>28</DIV></TD><TD noWrap x:num><DIV align=center>29.8</DIV></TD><TD noWrap x:num><DIV align=center>29.93</DIV></TD><TD noWrap x:num><DIV align=center>30</DIV></TD><TD noWrap x:num><DIV align=center>105</DIV></TD><TD noWrap x:num><DIV align=center>100</DIV></TD><TD noWrap x:num><DIV align=center>103</DIV></TD><TD noWrap x:num><DIV align=center>104.3</DIV></TD><TD noWrap x:num><DIV align=center>104.8</DIV></TD><TD noWrap x:num><DIV align=center>105</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>32</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>30</DIV></TD><TD noWrap x:num><DIV align=center>31.7</DIV></TD><TD noWrap x:num><DIV align=center>31.93</DIV></TD><TD noWrap x:num><DIV align=center>32</DIV></TD><TD noWrap x:num><DIV align=center>110</DIV></TD><TD noWrap x:num><DIV align=center>105</DIV></TD><TD noWrap x:num><DIV align=center>108</DIV></TD><TD noWrap x:num><DIV align=center>109.3</DIV></TD><TD noWrap x:num><DIV align=center>109.8</DIV></TD><TD noWrap x:num><DIV align=center>110</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>35</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>33</DIV></TD><TD noWrap x:num><DIV align=center>34.7</DIV></TD><TD noWrap x:num><DIV align=center>34.93</DIV></TD><TD noWrap x:num><DIV align=center>35</DIV></TD><TD noWrap x:num><DIV align=center>115</DIV></TD><TD noWrap x:num><DIV align=center>110</DIV></TD><TD noWrap x:num><DIV align=center>113</DIV></TD><TD noWrap x:num><DIV align=center>114.3</DIV></TD><TD noWrap x:num><DIV align=center>114.8</DIV></TD><TD noWrap x:num><DIV align=center>115</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>38</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>36</DIV></TD><TD noWrap x:num><DIV align=center>37.7</DIV></TD><TD noWrap x:num><DIV align=center>37.93</DIV></TD><TD noWrap x:num><DIV align=center>38</DIV></TD><TD noWrap x:num><DIV align=center>120</DIV></TD><TD noWrap x:num><DIV align=center>115</DIV></TD><TD noWrap x:num><DIV align=center>118</DIV></TD><TD noWrap x:num><DIV align=center>119.3</DIV></TD><TD noWrap x:num><DIV align=center>119.8</DIV></TD><TD noWrap x:num><DIV align=center>120</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>40</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>38</DIV></TD><TD noWrap x:num><DIV align=center>39.7</DIV></TD><TD noWrap x:num><DIV align=center>39.93</DIV></TD><TD noWrap x:num><DIV align=center>40</DIV></TD><TD noWrap x:num><DIV align=center>125</DIV></TD><TD noWrap x:num><DIV align=center>120</DIV></TD><TD noWrap x:num><DIV align=center>123</DIV></TD><TD noWrap x:num><DIV align=center>124.3</DIV></TD><TD noWrap x:num><DIV align=center>124.8</DIV></TD><TD noWrap x:num><DIV align=center>125</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>42</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>40</DIV></TD><TD noWrap x:num><DIV align=center>41.7</DIV></TD><TD noWrap x:num><DIV align=center>41.93</DIV></TD><TD noWrap x:num><DIV align=center>42</DIV></TD><TD noWrap x:num><DIV align=center>130</DIV></TD><TD noWrap x:num><DIV align=center>125</DIV></TD><TD noWrap x:num><DIV align=center>128</DIV></TD><TD noWrap x:num><DIV align=center>129.3</DIV></TD><TD noWrap x:num><DIV align=center>129.8</DIV></TD><TD noWrap x:num><DIV align=center>130</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>45</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>43</DIV></TD><TD noWrap x:num><DIV align=center>44.7</DIV></TD><TD noWrap x:num><DIV align=center>44.93</DIV></TD><TD noWrap x:num><DIV align=center>45</DIV></TD><TD noWrap x:num><DIV align=center>135</DIV></TD><TD noWrap x:num><DIV align=center>130</DIV></TD><TD noWrap x:num><DIV align=center>133</DIV></TD><TD noWrap x:num><DIV align=center>134.3</DIV></TD><TD noWrap x:num><DIV align=center>134.8</DIV></TD><TD noWrap x:num><DIV align=center>135</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>48</DIV></TD><TD noWrap><DIV align=center>—</DIV></TD><TD noWrap x:num><DIV align=center>46</DIV></TD><TD noWrap x:num><DIV align=center>47.7</DIV></TD><TD noWrap x:num><DIV align=center>47.93</DIV></TD><TD noWrap x:num><DIV align=center>48</DIV></TD><TD noWrap x:num><DIV align=center>140</DIV></TD><TD noWrap x:num><DIV align=center>135</DIV></TD><TD noWrap x:num><DIV align=center>138</DIV></TD><TD noWrap x:num><DIV align=center>139.3</DIV></TD><TD noWrap x:num><DIV align=center>139.8</DIV></TD><TD noWrap x:num><DIV align=center>140</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>50</DIV></TD><TD noWrap x:num><DIV align=center>45</DIV></TD><TD noWrap x:num><DIV align=center>48</DIV></TD><TD noWrap x:num><DIV align=center>49.7</DIV></TD><TD noWrap x:num><DIV align=center>49.93</DIV></TD><TD noWrap x:num><DIV align=center>50</DIV></TD><TD noWrap x:num><DIV align=center>145</DIV></TD><TD noWrap x:num><DIV align=center>140</DIV></TD><TD noWrap x:num><DIV align=center>143</DIV></TD><TD noWrap x:num><DIV align=center>144.3</DIV></TD><TD noWrap x:num><DIV align=center>144.8</DIV></TD><TD noWrap x:num><DIV align=center>145</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>52</DIV></TD><TD noWrap x:num><DIV align=center>47</DIV></TD><TD noWrap x:num><DIV align=center>50</DIV></TD><TD noWrap x:num><DIV align=center>51.7</DIV></TD><TD noWrap x:num><DIV align=center>51.93</DIV></TD><TD noWrap x:num><DIV align=center>52</DIV></TD><TD noWrap x:num><DIV align=center>150</DIV></TD><TD noWrap x:num><DIV align=center>145</DIV></TD><TD noWrap x:num><DIV align=center>148</DIV></TD><TD noWrap x:num><DIV align=center>149.3</DIV></TD><TD noWrap x:num><DIV align=center>149.8</DIV></TD><TD noWrap x:num><DIV align=center>150</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>55</DIV></TD><TD noWrap x:num><DIV align=center>51</DIV></TD><TD noWrap x:num><DIV align=center>53</DIV></TD><TD noWrap x:num><DIV align=center>54.5</DIV></TD><TD noWrap x:num><DIV align=center>54.92</DIV></TD><TD noWrap x:num><DIV align=center>55</DIV></TD><TD noWrap x:num><DIV align=center>155</DIV></TD><TD noWrap x:num><DIV align=center>150</DIV></TD><TD noWrap x:num><DIV align=center>153</DIV></TD><TD noWrap x:num><DIV align=center>154.3</DIV></TD><TD noWrap x:num><DIV align=center>154.8</DIV></TD><TD noWrap x:num><DIV align=center>155</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>58</DIV></TD><TD noWrap x:num><DIV align=center>54</DIV></TD><TD noWrap x:num><DIV align=center>56</DIV></TD><TD noWrap x:num><DIV align=center>57.5</DIV></TD><TD noWrap x:num><DIV align=center>57.92</DIV></TD><TD noWrap x:num><DIV align=center>58</DIV></TD><TD noWrap x:num><DIV align=center>160</DIV></TD><TD noWrap x:num><DIV align=center>155</DIV></TD><TD noWrap x:num><DIV align=center>158</DIV></TD><TD noWrap x:num><DIV align=center>159.3</DIV></TD><TD noWrap x:num><DIV align=center>159.8</DIV></TD><TD noWrap x:num><DIV align=center>160</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>60</DIV></TD><TD noWrap x:num><DIV align=center>56</DIV></TD><TD noWrap x:num><DIV align=center>58</DIV></TD><TD noWrap x:num><DIV align=center>59.5</DIV></TD><TD noWrap x:num><DIV align=center>59.95</DIV></TD><TD noWrap x:num><DIV align=center>60</DIV></TD><TD noWrap x:num><DIV align=center>165</DIV></TD><TD noWrap x:num><DIV align=center>160</DIV></TD><TD noWrap x:num><DIV align=center>163</DIV></TD><TD noWrap x:num><DIV align=center>164.3</DIV></TD><TD noWrap x:num><DIV align=center>164.8</DIV></TD><TD noWrap x:num><DIV align=center>165</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>62</DIV></TD><TD noWrap x:num><DIV align=center>58</DIV></TD><TD noWrap x:num><DIV align=center>60</DIV></TD><TD noWrap x:num><DIV align=center>61.5</DIV></TD><TD noWrap x:num><DIV align=center>61.92</DIV></TD><TD noWrap x:num><DIV align=center>62</DIV></TD><TD noWrap x:num><DIV align=center>170</DIV></TD><TD noWrap x:num><DIV align=center>165</DIV></TD><TD noWrap x:num><DIV align=center>168</DIV></TD><TD noWrap x:num><DIV align=center>169.3</DIV></TD><TD noWrap x:num><DIV align=center>169.8</DIV></TD><TD noWrap x:num><DIV align=center>170</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>65</DIV></TD><TD noWrap x:num><DIV align=center>61</DIV></TD><TD noWrap x:num><DIV align=center>63</DIV></TD><TD noWrap x:num><DIV align=center>64.5</DIV></TD><TD noWrap x:num><DIV align=center>64.92</DIV></TD><TD noWrap x:num><DIV align=center>65</DIV></TD><TD noWrap x:num><DIV align=center>175</DIV></TD><TD noWrap x:num><DIV align=center>170</DIV></TD><TD noWrap x:num><DIV align=center>173</DIV></TD><TD noWrap x:num><DIV align=center>174.3</DIV></TD><TD noWrap x:num><DIV align=center>174.8</DIV></TD><TD noWrap x:num><DIV align=center>175</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>68</DIV></TD><TD noWrap x:num><DIV align=center>64</DIV></TD><TD noWrap x:num><DIV align=center>66</DIV></TD><TD noWrap x:num><DIV align=center>67.5</DIV></TD><TD noWrap x:num><DIV align=center>67.9</DIV></TD><TD noWrap x:num><DIV align=center>68</DIV></TD><TD noWrap x:num><DIV align=center>180</DIV></TD><TD noWrap x:num><DIV align=center>175</DIV></TD><TD noWrap x:num><DIV align=center>178</DIV></TD><TD noWrap x:num><DIV align=center>179.3</DIV></TD><TD noWrap x:num><DIV align=center>179.8</DIV></TD><TD noWrap x:num><DIV align=center>180</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>70</DIV></TD><TD noWrap x:num><DIV align=center>66</DIV></TD><TD noWrap x:num><DIV align=center>68</DIV></TD><TD noWrap x:num><DIV align=center>69.5</DIV></TD><TD noWrap x:num><DIV align=center>69.9</DIV></TD><TD noWrap x:num><DIV align=center>70</DIV></TD><TD noWrap x:num><DIV align=center>185</DIV></TD><TD noWrap x:num><DIV align=center>180</DIV></TD><TD noWrap x:num><DIV align=center>183</DIV></TD><TD noWrap x:num><DIV align=center>184.3</DIV></TD><TD noWrap x:num><DIV align=center>184.8</DIV></TD><TD noWrap x:num><DIV align=center>185</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>72</DIV></TD><TD noWrap x:num><DIV align=center>68</DIV></TD><TD noWrap x:num><DIV align=center>70</DIV></TD><TD noWrap x:num><DIV align=center>71.5</DIV></TD><TD noWrap x:num><DIV align=center>71.9</DIV></TD><TD noWrap x:num><DIV align=center>72</DIV></TD><TD noWrap x:num><DIV align=center>190</DIV></TD><TD noWrap x:num><DIV align=center>185</DIV></TD><TD noWrap x:num><DIV align=center>188</DIV></TD><TD noWrap x:num><DIV align=center>189.3</DIV></TD><TD noWrap x:num><DIV align=center>189.8</DIV></TD><TD noWrap x:num><DIV align=center>190</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>75</DIV></TD><TD noWrap x:num><DIV align=center>71</DIV></TD><TD noWrap x:num><DIV align=center>73</DIV></TD><TD noWrap x:num><DIV align=center>74.5</DIV></TD><TD noWrap x:num><DIV align=center>74.9</DIV></TD><TD noWrap x:num><DIV align=center>75</DIV></TD><TD noWrap x:num><DIV align=center>195</DIV></TD><TD noWrap x:num><DIV align=center>190</DIV></TD><TD noWrap x:num><DIV align=center>193</DIV></TD><TD noWrap x:num><DIV align=center>194.3</DIV></TD><TD noWrap x:num><DIV align=center>194.8</DIV></TD><TD noWrap x:num><DIV align=center>195</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>78</DIV></TD><TD noWrap x:num><DIV align=center>74</DIV></TD><TD noWrap x:num><DIV align=center>76</DIV></TD><TD noWrap x:num><DIV align=center>77.5</DIV></TD><TD noWrap x:num><DIV align=center>77.9</DIV></TD><TD noWrap x:num><DIV align=center>78</DIV></TD><TD noWrap x:num><DIV align=center>200</DIV></TD><TD noWrap x:num><DIV align=center>194</DIV></TD><TD noWrap x:num><DIV align=center>197</DIV></TD><TD noWrap x:num><DIV align=center>199.3</DIV></TD><TD noWrap x:num><DIV align=center>199.8</DIV></TD><TD noWrap x:num><DIV align=center>200</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>80</DIV></TD><TD noWrap x:num><DIV align=center>75</DIV></TD><TD noWrap x:num><DIV align=center>78</DIV></TD><TD noWrap x:num><DIV align=center>79.5</DIV></TD><TD noWrap x:num><DIV align=center>79.9</DIV></TD><TD noWrap x:num><DIV align=center>80</DIV></TD><TD noWrap x:num><DIV align=center>210</DIV></TD><TD noWrap x:num><DIV align=center>204</DIV></TD><TD noWrap x:num><DIV align=center>207</DIV></TD><TD noWrap x:num><DIV align=center>209.3</DIV></TD><TD noWrap x:num><DIV align=center>209.8</DIV></TD><TD noWrap x:num><DIV align=center>210</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>82</DIV></TD><TD noWrap x:num><DIV align=center>77</DIV></TD><TD noWrap x:num><DIV align=center>80</DIV></TD><TD noWrap x:num><DIV align=center>81.3</DIV></TD><TD noWrap x:num><DIV align=center>81.85</DIV></TD><TD noWrap x:num><DIV align=center>82</DIV></TD><TD noWrap x:num><DIV align=center>220</DIV></TD><TD noWrap x:num><DIV align=center>214</DIV></TD><TD noWrap x:num><DIV align=center>217</DIV></TD><TD noWrap x:num><DIV align=center>219.3</DIV></TD><TD noWrap x:num><DIV align=center>219.8</DIV></TD><TD noWrap x:num><DIV align=center>220</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>85</DIV></TD><TD noWrap x:num><DIV align=center>80</DIV></TD><TD noWrap x:num><DIV align=center>83</DIV></TD><TD noWrap x:num><DIV align=center>84.3</DIV></TD><TD noWrap x:num><DIV align=center>84.85</DIV></TD><TD noWrap x:num><DIV align=center>85</DIV></TD><TD noWrap x:num><DIV align=center>250</DIV></TD><TD noWrap x:num><DIV align=center>244</DIV></TD><TD noWrap x:num><DIV align=center>247</DIV></TD><TD noWrap x:num><DIV align=center>249.3</DIV></TD><TD noWrap x:num><DIV align=center>249.8</DIV></TD><TD noWrap x:num><DIV align=center>250</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>88</DIV></TD><TD noWrap x:num><DIV align=center>83</DIV></TD><TD noWrap x:num><DIV align=center>86</DIV></TD><TD noWrap x:num><DIV align=center>87.3</DIV></TD><TD noWrap x:num><DIV align=center>87.85</DIV></TD><TD noWrap x:num><DIV align=center>88</DIV></TD><TD noWrap x:num><DIV align=center>280</DIV></TD><TD noWrap x:num><DIV align=center>274</DIV></TD><TD noWrap x:num><DIV align=center>277</DIV></TD><TD noWrap x:num><DIV align=center>279.3</DIV></TD><TD noWrap x:num><DIV align=center>279.8</DIV></TD><TD noWrap x:num><DIV align=center>280</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>90</DIV></TD><TD noWrap x:num><DIV align=center>85</DIV></TD><TD noWrap x:num><DIV align=center>88</DIV></TD><TD noWrap x:num><DIV align=center>89.3</DIV></TD><TD noWrap x:num><DIV align=center>89.85</DIV></TD><TD noWrap x:num><DIV align=center>90</DIV></TD><TD noWrap x:num><DIV align=center>300</DIV></TD><TD noWrap x:num><DIV align=center>294</DIV></TD><TD noWrap x:num><DIV align=center>297</DIV></TD><TD noWrap x:num><DIV align=center>299.3</DIV></TD><TD noWrap x:num><DIV align=center>299.8</DIV></TD><TD noWrap x:num><DIV align=center>300</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>92</DIV></TD><TD noWrap x:num><DIV align=center>87</DIV></TD><TD noWrap x:num><DIV align=center>90</DIV></TD><TD noWrap x:num><DIV align=center>91.3</DIV></TD><TD noWrap x:num><DIV align=center>91.85</DIV></TD><TD noWrap x:num><DIV align=center>92</DIV></TD><TD noWrap x:num><DIV align=center>320</DIV></TD><TD noWrap x:num><DIV align=center>314</DIV></TD><TD noWrap x:num><DIV align=center>317</DIV></TD><TD noWrap x:num><DIV align=center>319.3</DIV></TD><TD noWrap x:num><DIV align=center>319.8</DIV></TD><TD noWrap x:num><DIV align=center>320</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>95</DIV></TD><TD noWrap x:num><DIV align=center>90</DIV></TD><TD noWrap x:num><DIV align=center>93</DIV></TD><TD noWrap x:num><DIV align=center>94.3</DIV></TD><TD noWrap x:num><DIV align=center>94.85</DIV></TD><TD noWrap x:num><DIV align=center>95</DIV></TD><TD noWrap x:num><DIV align=center>350</DIV></TD><TD noWrap x:num><DIV align=center>342</DIV></TD><TD noWrap x:num><DIV align=center>347</DIV></TD><TD noWrap x:num><DIV align=center>349.3</DIV></TD><TD noWrap x:num><DIV align=center>349.8</DIV></TD><TD noWrap x:num><DIV align=center>350</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>98</DIV></TD><TD noWrap x:num><DIV align=center>93</DIV></TD><TD noWrap x:num><DIV align=center>96</DIV></TD><TD noWrap x:num><DIV align=center>97.3</DIV></TD><TD noWrap x:num><DIV align=center>97.85</DIV></TD><TD noWrap x:num><DIV align=center>98</DIV></TD><TD noWrap x:num><DIV align=center>380</DIV></TD><TD noWrap x:num><DIV align=center>372</DIV></TD><TD noWrap x:num><DIV align=center>377</DIV></TD><TD noWrap x:num><DIV align=center>379.2</DIV></TD><TD noWrap x:num><DIV align=center>379.75</DIV></TD><TD noWrap x:num><DIV align=center>380</DIV></TD></TR><TR><TD noWrap x:num><DIV align=center>100</DIV></TD><TD noWrap x:num><DIV align=center>93</DIV></TD><TD noWrap x:num><DIV align=center>98</DIV></TD><TD noWrap x:num><DIV align=center>99.3</DIV></TD><TD noWrap x:num><DIV align=center>99.85</DIV></TD><TD noWrap x:num><DIV align=center>100</DIV></TD><TD noWrap x:num><DIV align=center>400</DIV></TD><TD noWrap x:num><DIV align=center>392</DIV></TD><TD noWrap x:num><DIV align=center>397</DIV></TD><TD noWrap x:num><DIV align=center>399.2</DIV></TD><TD noWrap x:num><DIV align=center>399.75</DIV></TD><TD noWrap x:num><DIV align=center>400</DIV></TD></TR></TBODY></TABLE><DIV>注：1、如果铸出的孔有很大的加工余量时，则第一次粗镗可分为两次或多次粗镗。</DIV><DIV>2、如果只进行一次半精镗，则其加工余量为表中“半精镗”和“粗铰或二次半精镗”加工余量之和。</DIV><DIV> </DIV></DIV>
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